Honestly, should Andromeda been a bit more alien?

I've actually been thinking about this issue recently myself and there are two obvious conclusions.

1. Lack of expertise with frostbite.

2. Or a creative decision.

It's the second one that is the most interesting.

Sure maybe more alien aliens are more interesting and maybe it's bad writing that bioware thought they couldn't pull it off.

But.

Compare the kett to the Reapers. The reapers were allllliiiiieennn. All powerful. Alien design . unknowable. Unsympathetic. Monolithic. More a force of nature then an enemy faction. The Ketts design is part of what suggests the opposite. We can know about them. We can understand them. We can understand their motives. We can reason with them. They have depth and nuance and they have different opinions from one another. Which makes them more interesting then the Reapers. And Cerberus for that matter.

It's not so much the quantity of alien races, but their quality (IMO).

BioWare could add fifty new alien species to Andromeda via DLC and/or sequels, but if they're all just humans with blue/green skin and a rubber prosthetic glued to their forehead then the game will still not be very 'alien'. In fact, it would probably be even more human-centric since the setting would be so diluted with people exactly like us in every way, save for appearance. It was rather disappointing to come all the way to Andromeda, across the depths of dark space, and the first friendly natives we run into are practical mirror images of us in terms of cultural norms and general reliability; heck, they were even more human-like than the Asari, which is saying something. Even the Khet come across as just bony humans once the narrative actually allows Ryder the chance to talk to them. There is no 'other' in Andromeda, no quality writing along the lines of say your aliens like the Rachni, or (ME 2) Geth. 

Now I'm not saying that species like the ones mentioned above were the best examples of 'alien' writing in any mainstream science fiction ever, but it does bear mentioning how much more nuanced ME 1 was with its various takes on life,  how it perceives the universe around it; at how humanity, and our way of thinking or doing things was just a small, small part of a much, much larger universe. Compare that to Andromeda and it's seemingly underlying theme of "Pretty Good Banging" when it came to depicting things and one can begin to see why people are saying ME:A wasn't very 'alien'.

That's a fair point. I've said it before in discussions like this, but one series I think does a good job at the aliens being relatable yet alien is Halo. Sure there are some that have similarities but overall you can't really say they are "alien version of this culture". And even those ones look unique compared to humans. Then there are the truly alien ones.

Name 1 cluster in the Trilogy that had more than 2 alien species.

I like Halo 3/4/5 as much as the first two. In fact i can't wait to see what the Promethean's and Cortana have in store for us.

Ok, to answer this question seriously, that's a bad excuse IMO.
First: it was the decision of the ME:A writers to make the entire game take place in one cluster, no one forced them.
Second: The same rules as in the MW wouldn't have had to apply to Andromeda.
Third: In the MW, while there is no known cluster from which more than one or two species originate, they are all mixed now. If you fly into any cluster in the MW you'll meet almost every single species there.

So yea, sure, it "makes sense" that there are only 2 species in the Helios cluster but that doesn't make the situation any better IMO.

Ok, to answer this question seriously, that's a bad excuse IMO.
First: it was the decision of the ME:A writers to make the entire game take place in one cluster, no one forced them.
Second: The same rules as in the MW wouldn't have had to apply to Andromeda.
Third: In the MW, while there is no known cluster from which more than one or two species originate, they are all mixed now. If you fly into any cluster in the MW you'll meet almost every single species there.

So yea, sure, it "makes sense" that there are only 2 species in the Helios cluster but that doesn't make the situation any better IMO.

That's not a bad excuse. That's the reason.