If repplaying the original trilogy, what will you miss from ME:A?

I hated the Mako, and yet at the same time, I wouldn't miss the Nomad (This doesn't mean I'm against the Nomad, I just wouldn't miss it if they took it out, or rather if they made it so the Nomad didn't have to be used as much as it was in Andromeda). I'd rather Bioware didn't make the maps as big as they did in Andromeda for the next game. I'd rather they give us more locations that were smaller in size, but with more variety in the landscapes.

Most everything. Mobility, profiles, environments, even the storytelling. I like the trilogy, and I'll certainly play through it again someday, but I really like the direction that BioWare is going. Filling out a main story with side quests is a good direction, they just need to keep improving on it.

Jetpacks.
The lack of a level cap.
Having all those powers.
Weapon modding and crafting.
A lot more things don't come in my mind atm.

The Mako has its charm. I can't speak for PC or XBox, but I've come to the point where I can drive that bouncy sonofabitch with my thumbs tied behind my back so I can well compensate for its wacky physics. 

It's the Hammerhead I don't give a spit about though.

But yeah, it makes me miss the Nomad something fierce. 

The number one thing I would miss. Mr/Ms/Mrs Fiend. He/she is one awesome character. The way he/she grabs my Ryder, bites Ryder and then throws Ryder to the ground like a piece of crap. excellent.

-No restrictions based on class (both skills and weapons).

-The Nomad whoch makes the Mako even more pathetic to drive in comparison. The Hammerhead? Not even a blip on this radar.

-The combat, all of it.

-My protagonist not sounding like a dope sometimes.

-The glorious jetpack. The movement set in general.

-Drack, Jaal and Cora.

-Actually feeling like the game is a set of levels rather than shooting galleries.

-Not having to deal with Cerberus.

There are no Cerberus logos to activate my PTSD, that's good enough for me.

Ok.  This post made me realize that I've gotten to the point where I just don't even think about the cover system.  It's so natural and fluid that it just works.  This, right here, is probably my #1 favorite thing about the new combat system.  The mobility is a very, VERY close second, but the cover system?  Yeah.  I like.  I like it SOOO good.

Or use the one seen on Aya.

That obviously depends on which game you're talking about it. In terms of combat the original Mass Effect was somewhat lacking. In many way more difficult to the point where I just feel the game is unfair, in other ways easier so that you just wonder "just how stupid are those mobs".

If you compare Mass Effect Andromeda with Mass Effect you find that in Mass Effect:
1) Mobs have virtually no situational awareness, they don't coordinate, it makes no difference to them whether they are being shot at and they hardly coordinate with their team mates.
2) Fights take longer as mobs are more resilient compared to your damage output.
3) Ranged mobs do not usually try to flank you, once shock troops were cleared a fight against ranged mobs could often become draw out for minutes while you were shooting from cover and neither side moves.
4) Massive hits have less effect on mobs: Even a headshot with a heavy single shot sniper rifle does not throw mobs off balance, it is impossible to stop a mob which still has shields.
5) Mobs use virtually no powers that drive you out of cover, such as grenades.
6) Melee mobs had a tendency to be faster than the player characer... well, maybe not every melee mob, but specifically krogan.
7) Your team mates were just as stupid as the mobs, you had to tell them everything.
8) Weapons were less accurate.
9) There were a few enemies that I found straight OP in Mass Effect, namely Krogan Warlords.

Nothing. There is nothing that I thought Andromeda did better than the trilogy.