The Chosen I've been able to keep up with so far as well, though I admit to some heavy save scumming in places. At least they have stated weaknesses, though I sorta wish we had some cutscene explaining how we have any intelligence on them. As it stands we just get a splash screen every time we see them showing their buffs and debuffs.

Part of me is irritated it sort of cuts out some of the content in the DLC before War of the Chosen, but we still get the guns and whatnot at least, and some of the DLC content, like the mission added in Shen's Last Gift, is very much good riddance. (And the armor you can make from Dr. Vahlen's research subjects is still some of the stupidest looking stuff in the game. Can't even paint it a decent color.)

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Fearless creatures, we all learn to fight the Reaper
Can't defeat Her, so instead I'll have to be Her