The animations aren’t entirely bad, they’re nothing fancy but not terrible either.
Also subjective, though they can be improved upon, I agree
AI does use cover in Enlisted, up to a certain point. Note that in BiA, you are fighting AI, which makes it much more easy to set up a cover system.
There is a voice system, nobody uses it though.
4 Major updates is actually a decent ammount. You are talking about a small development studio with probably less than 100 total employees (including marketing, management, everything), not some large AAA studio (which can have over 5000 total employees). The game will become free to play, after closed beta ends, so there is no objective cash grab going on here.