Would you like the squadmate to make a comment when chosen for a mission?

It's not a deal breaker or even a top 100 issue for me, but... Sure, it was a fun little touch.
Actually (and this might make me a sadistic asshat), I was more amused by their whining when you deselected them again.

Any companion's comment in any situation is a good thing. But ME never had that feature, did it?

Only if the Asari will mention various facts about raccoons and space raccoons.

I wouldn't necessarily mind, but I'd place a higher priority on them having plenty of ambient, mission related comments after the scene begins.

I wanted my Shepard to reply to their whining by telling them why she didn't  pick them

The more little things like that included the better the experience imo. I'd dare say to go farther where including team members on missions gains approval and exclusion results in disapproval.

Mmm, nope. I don't like it.

Not a bad idea. The only thing is on the 4th or 8th run, I'd probably get annoyed with the whining if a squadmate isn't chosen for a mission

Ideally I think it should be as flexible as possible, within reason. If a player starts a mission and suddenly thinks, "ah, it would have been nice to have X companion here instead", it would be nice to be able to swap out on the spot, as long as it's outwith combat. Anything that provides the player with extra choice usually gets a thumbs up from me. If a player doesn't want to do it because they feel it breaks immersion, they don't have to, but it would be nice for the choice to be there.

Having said that, I'd understand if the option to swap became locked out in certain circumstances - in missions where there is a sense that you really couldn't go back, or had passed a 'point of no return' sort of thing. But in general, especially when exploring, I think we should be given the option.

I'm trying to remember how previous BioWare games did it. KOTOR had the most freedom, I think. You could pretty much swap any time out of combat. Origins was leaving camp or in certain open areas, Inquisition had the party camps on each map...It's the ME games that are more restrictive. Once you've chosen your party for a map or mission, you're pretty much stuck.

Why not! I also really liked how in DAII companions would mutter cute/funny lines when going down/getting revived. Some of that stuff cracked me up even after many repeats.

Banter: Dragon Age > Mass Effect

Companion arcs/main story: Mass Effect > Dragon Age

I'm in favor. It's the little details that show the devs love for the project.

Why not?