Andromeda did bring some new stuff to the table, but what they left off reallllly doesn't get talked about as much.
I've only done two big missions, but already I'm seeing stuff that I forgot I missed. Yanking enemies over kill for instant kills, way better ability combos/reactions (even the physics and pathing is better which really makes no sense to me), the weapons set themselves apart without relying on mod system that's so over designed that everything blends together, etc.
But the enemy factions are worlds apart too. You don't even have to care what you're shooting at in Andromeda. In ME3, a Brute will legit guard its face and walk you into a corner. Engineers will set up turrets while shielded goons cover them - if you're not proactive to get on top of them, they'll take complete control of an area. Marauders will take turns between interacting with their allies and fukking you up. Larger enemies will snatch you right out of a biotic charge and straight up kill you instantly if you run up on them wrong. Its well done for every kind of environment too.
Andromeda was mostly wide open spaces so like..... yeah you got a jetpack for what
after replaying it a while back, most of the work the jetpack got was for all the platforming. Not to shyt on Andromeda more than I already have, but ME3's combat is damned good for an RPG.
When it released, I was rolling my eyes at the intro and years later I see the intro and lower my expectations all over again. There's no way you see how that game starts, encounter the sidequest tracker spreadsheet, see these ridiculous characters (James, Jersey Shore reporter woman, event descriptions not matching event reality, etc) and think you're gonna wind up anywhere good. They got you playing Pac-Man on the galaxy map
just about every storyline feels like its part of a punchline too. The franchise didn't even sink off ME3. They milked it through DLC for years and its probably one of bioware's longest supported (not SWTOR) titles overall. They just moved on to other projects.
but Kaidan is boring imo. He can be the sacrificial lamb if it comes to it.
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played M'Baku in one of the avengers shows
cool but the general consensus was not "ME3" in general was wack. Again....until the ending. And like I said, the worst aspects of the game were nowhere near bad enough to tip anyone off as to how terrible the ending would be. 
And people, more or less, just accept Shepard Is Back. And the only push back is....you're working for Cerberus. And I only did the EDI mission on the Moon.