I don't know if you're going to change the map itself. If you can, then I'd suggest raising the roof a bit over the tiny hallways in each team's base in order to allow spies to stair stab, because I often hit the roof with my head and I end up getting myself killed. Another thing would be to make the hallways slightly wider. Not much, but enough so people don't get body blocked all the time. Whenever there's more than 8-10 people in the server (90% of the time), even after using the dead ringer, I just can't get away cause I'm being blocked by a big fat heavy.
I also think you should remove the invisible barriers on the windows at the top of each base, because right now, people have only one way out. And if a big fat heavy is blocking the hallway in that direction, then you have nowhere to run. Those just ruin the experience imo, people should be able to get in the enemy base through every window. And if you think about it, that could end up solving the grenade spamming problem as well, since people will have multiple pathways instead of just going out the front door and getting blown up by a random grenade.
There's also an issue with the leveling system. You crit more often the more attribute points you spent in crit, that's fine. But as players get higher and higher in level they start killing the whole enemy team with a single rocket. The reason for that is that nobody levels lifeforce. And the reason nobody levels lifeforce is because it's useless. It works like an overheal, in other words it's temporary. If leveling lifeforce increased your max HP permanently, not just for a few seconds, I believe the server would be more balanced.
Personally I'd level about 10 points in lifeforce and the rest I would split evenly in crit and dexterity. But the way it is right now, there's no way I'd spend points on lifeforce.
P.S Chaning the playclip is a bad idea imo. Of course, I didn't quite understand what you mean.
"So what we will improve is changing the playerclip from the spawns so enemies cant walk as close into the resupply room as they can now."
Do you elaborating? What I understand from this sentence is that people won't be able to get as close to the enemy base as they can right now. If so, then that is a HUGE mistake.
You should definitely not do that, if that's what you ment. Spawn killing can happen even from the windows of your own base and even from my door. I don't need to get close to the enemy base in order to spawn kill. By making this change you will only reduce the fun. Soldiers might not be able to rocket jump into the second floor anymore, spies won't be as effective and etc. Generally, a bad idea.
If this is not what you ment, when you said you'd change the playerclip, then please explain.