Anyone getting back into ME3 MP for warmup runs?

So, I played a ton of ME3MP back in the day, though I 'retired' when DA: Inquisition came out late 2014. Both are the games I have played the most in my life. According to Origin I have 2.7k hours in ME3 and 3.3k hours in DA:I.
For me, ME3 was a great game, my first serious MP game and thus I use it as benchmark - particularly against DAMP, a game which despite playing so much I've always considered a to be an unpolished mess.

Though I played a few ME3MP matches now and then after having 'retired' from it, I didn't play any over the last year. I didn't play much DAMP either. I took advantage to get to know other games out there, and I had a blast playing Evolve, Overwatch and Titanfall 2, as well as a the campaign mode of a few other titles.

Now to warm up for MEAMP I decided to get back to ME3 this week and after doing so, ugh... it doesn't feel right. Firstly there are so many characters to choose from, yet some are so much better than others that having to pick out one feels stupid. I mean, why would you want to choose the Volus Mercenary over the QME? To have a few laughs maybe, or perhaps some headache? The gap is so tremendous that getting lower tier characters feels silly, while getting high tier ones feels cheap. In DAMP (which is supposed to be an inferior game... right?) there are 17 characters and they are pretty balanced among them. In fact there are no characters necessarily better than others, it all comes down to their roles.

And then there comes another issue with ME3: there are no roles! Except when everybody is camping behind a Juggernaut and there is a shield spamming Volus, but otherwise the only existing role is the DPS one. It is the only role that gets XP. Nothing else awards XP. There is no incentive whatsoever not to play as straight-DPS-bitch-mode as possible. In fact, if you do not do so you are gimping yourself and possibly harming the team.

After 4 matches I had enough. I don't see the point in ME3MP anymore. Today I got invited to play DAMP, played 5 hours of it and had a decent time playing, and it felt much more meaningful and rewarding than ME3MP. While DAMP is supposedly a worse, utterly unpolished game, it has a better proposition. A true co-op proposition. ME3MP feels like a single player game in a 4 Vs AI format.

Now I fear what MEAMP is going to be like, a bit more than I already did.

I wouldn't worry about it too much. DAMP's difference in potential between classes is quite pronounced for new players. The gap only closes between them because promotions affect stats, so the more you play, the more viable the other classes become.

ME:A will be doing something similar, I think, so the same thing should happen there.

why would you want to choose the Volus Mercenary over the QME