You think ME Andromeda will be more "childish" than the trilogy?

I think it's rather that instead of rebranding their failed devs who could really use a change of career or place to work I think BioWare is attempting to rebrand their fanbase by removing the hangout place BSN from their loyal (but increasingly resentful) fanbase hoping that newcomers will like modern BioWare while the old haters will leave. That way BioWare don't actually have to improve or change themselves in order to make games people like, and they can keep promoting people like Mac or Mike Laidlaw who used to be Lead Writers but failed instead of firing them.

I think ME1 hit that note rather perfectly. I would be super satisfied if this game captures the feel of that game. 

I understand. And I agree that it would be bad if we see our Ryder as a bundle of nerves. I don't think that will be the case, though.  I do think Ryder's going to feel some pressure. Anyone in a position of leadership does, but I think Ryder is young enough and maybe a bit cocky enough to figure they could handle it for the most part. Though maybe after a not-so-perfect mission, alone in those luxury quarters, the doubts might surface, but we won't necessarily see them. I'm sure even Shepard had doubts during even some of the simplest things. But for the most part, the Ryders have been raised by a heroic N7 and probably from the time they were weaned were exposed to all sorts of things most kids aren't. That would help give them the confidence to lead, even though they might not quite be ready for it. They'll also have a lot of support from good people.

I didn't take your post as an insult or criticism, by the way. 

It's just a bit strange playing someone that is younger than me, I would have preferred to just know they're in their 20s but that's it (kind of break the immersion to me). The pathfinder crew is like the face of humanity if you think about it, they're the ones that are meeting new species, discovering new places etc.. So I would think they'd put people a little tiny bit older, more experienced in charge.

Not saying they aren't experienced, we've seen in the little bios that they've been in the Alliance and all, but not for long really and as far as we know, don't have really outstanding achievements to put on their resumes. Would they even be there if it wasn't for their father? Oh well like many said before, we'll just have to wait and see.. Too many questions.

If you continue gaming much longer, I can assure you that you'll become accustomed to it.

Well, The problem back then wasn't that we were weaker then Corypheus, but the fact that they didn't write the latter in plots as a serious threat. If they did, there wouldn't have been a problem. Same with the Archon.
Beside, it's not that the difference between Shepard and Ryder has to be that great. They're still soldiers. It's not like in DA, where you can create characters with demigod powers that are stronger then previous protagonists.
It'll be crucial in any way how the handle the passage of power and the growth of Ryder.

That is certainly true. I really hope they know how to handle it but it seems ever since their first N7-day stream that this has been something they paid extra attention to, as they've talked about this "creating a guy who becomes the hero but isn't already proven"

The older you get, the more often this will happen. You may as well get used to it, I guess. 

Soon, you'll have bosses who are younger, congressmen, and eventually Presidents younger than yourself. Consider this training. (And adjust the above references to fit your national/cultural structure.)

Young people do a lot of the heavy lifting, in the real world. Shepard was about my age when the OT launched. He barely aged during the course of the story, spending a big part of the timeline dead, so I outpaced him in years. I continue to play the OT years later. Shepard isn't the only protagonist I enjoy leading through adventures. When I was a kid, they were all older than I. Now, they're mostly younger than I. I rarely think about it.

I'm sure the young Pathfinder will grow into his/her role. The Ryder twins are young adults, not teens. They've already served in the Alliance, and apparently had "special training" from dad, whatever that means. They've been trained with eventual Pathfinder service in mind. In the real world, SpecOps is full of guys this age, and wars are fought by men and women even younger. Companies employ managers this age. Things get done. It will be fine.

While PeeBee looks on the young side, other companions do not, and the two Ryders are as mature or as juvenile as you'd make/imagine them.

"Childish", no. Light-hearted is a much better term, as others have already said.

I really don't get the mindset that something being dark is automatically mature. That's how you end up with Shadow the Hedgehog, guys. We don't want Shadow the Hedgehog. Besides, it's not like everything is going to be perfect. As far as the crew in Andromeda is concerned, they're the last humans in the galaxy. If they're killed while exploring, or by the Kett or something similar, their species is essentially wiped out, at least in the galaxy they're in. That's pretty dark.

And considering the other galaxy is 600 years away, Andromeda is the only one that matters.

That being said, being explorers up against a hostile alien army is even more threatening than being a well-trained army themselves. They're under equipped, out-gunned, out-manned, and outclassed. It'll make overcoming that all the more satisfying, right?

At least, that's what I'm hoping for. As a big anime nerd, I like having unassuming protagonists who are thrust into extremely taxing situations more than I like having hardass war heroes as a main character. It's a very tried and true storytelling technique to have your main character be someone who isn't well versed in everything they do. They have to grow and learn. Shepard, for all intents and purposes, doesn't have to change in order to do what he needs to do. The Ryders need to mature. That's honestly an objectively better model with which to start a strong character arc.