Some new mechanics, such as the prone camo feature, do need some work, but I'm giving the developers the benefit of the doubt since this is only 6 days out of launch. Enemies are actually able to spot you, whereas in Wildlands you might as well walk in, do the mission, and walk back out.
That set aside, however, Breakpoint really offers a real, authentic, 'spec-ops' feel. I also don't like the player hub system in Erewhon, but my wifi is fairly consistent so this isn't really 'game-breaking', per-se. One thing I do not like, however, is not being able to play Ghost Recon offline anymore. It just came out, guys! Of course it's gonna have some issues! I personally have not experienced many 'game-breaking' glitches, the only 'real' one being that the game just randomly crashed and I had to restart it.
I see Breakpoint getting a lot of bad rep for glitches despite being only six days out from release.