It's not terrible by any means, but if you're not a fan of "tank controls," then you're never going to like how Gears plays on a fundamental level.
But there are actually two ways to play Gears: one is the traditional "stop and pop" way that the game was originally designed for—run to cover, kill some dudes, run to the next cover point. His is how campaign and horde typically play. The other, more fluid method is how most people play in multiplayer, rush/wall-bouncing. The problem with this style is that it isn't immediately apparent and the game doesn't even teach you about it. You only find out by playing multiplayer (where you usually end up getting destroyed by tryhards). And it takes a bit of practice to even be able to move like that.
Sounds like you're wanting more fluid movement from Gears. And it's there, but you're going to have to practice for it.
I believe most 3rd person shooters have moved on from that tank style of control. And I'm okay with that. It keeps Gears both unique and familiar. Honestly I'd be more annoyed if they drastically changed the movement since I and many other competitive players have become so used to it.