I have not played halo but Mass Effect 3 has super mechs or whatever these things are called (Been a while since I played). So I dont see it as affecting the lore. I know it is a vehicle or something like that but it is not much different to what I had in mind. Something much smaller. Iron Man being what I had in mind. Body armour than can be used more as an active tool as in a weapon or allowing you to fly.

I am sorry. Not an expert in this field. Did a little research and came up with the term 'mind uploading' into something. This doesn't quite explain the technology I would want in Andromeda as well as 'digitizing biolifeforms' or 'digitizing personalities' does.
The Halo powered armor is much more like the Iron Man suit and much less like ME's mechs.
Halo mjolnir armor (and all variants for Halo lore fan nickpickers) is a fusion powered body suit that Spartan (genetically enhanced) supersoldiers wear. It is put on by a machine apparatus, because it is too heavy for a human, even a genetically enhanced one, to put on. Once on, it stays on until removed again via machine. It enhances strength, agility, speed, mental acuity, targeting speed and accuracy. It is literally like the Iron Man suit, except it can't fly.
In Mass Effect, the armor is similarly powered, enhancing agility, strength, and biotic ability - but to a lesser degree than the Halo armor. Mass Effect spacesuits dont just protect you against the cold of space, they are much more than that.
The concept is similar, and honestly very, very realistic. Our militaries are actively researching combat skins today. No doubt, such technology will become inseparable from military conflict in the future.