There are a few things I'd like to briefly talk about that I've had, that has been frustrating me as of late. They are as follows:
Merc rotation: I think Merc rotation, especially in an FPS, is a fairly absurd idea. I think players should have access to most, if not all, Mercs or, at the very least, one of each Merc role. I do not understand why there is no access to a Sniper class, for example. I recently bought Vassili, but up until then, I had to rely on my team to hopefully switch to a countersniper role, so that we can push a little more safely, or defend a little more safely. Merc rotation also essentially turns the match into chaos and less of one that encourages teamwork and strategy. I've dealt with many absurdities, like triple Nader, Phoenix, Turtle, and understandably so. There isn't much of a Merc pool to begin with and restrictions means there will be duplicates and there will be imbalance. The game ultimately becomes a test of endurance, and not one of strategy and coordination.
Rhino as a whole: This is just based on the little time I've had with Rhino, and with no loadouts (because RNG is a pain in the ass like that) but I feel as though Rhino is almost incapable of doing his job reliably without having a teammate to back him up. When I see Rhino, my first instinct is to not confront him, because he can probably tank alot of damage and dish it back out. I see TF2 Heavy in Rhino. However, when I play him, he feels severely underwhelming. His spread is outrageous, and he just doesn't really have much sustain. 200HP is very easy to chew through, and I would have imagined he's have some sort of intrinsic damage reduction considering how much armor he has visually speaking. Honestly though, he feels like just a big pushover. I can't reliably combat more than one person because it's just very easy to get eliminated, and any range further than close to mid-range just feels like a waste of his Minigun. I could essenitally do Rhino's job better by being Vassili or Nader. Even Fletcher.
Right now, I'd like to see these maybe looked into a little bit more in the future, but that's how I feel personally at this moment. My feelings about both will change in the future I'm sure, but right now it just doesn't feel good.