[Cooltad]

No offense but there are already cvars you can use to make sentries and all buildables stronger.
There are also cvars for how much ammo costs etc and even one for infinite sentry ammo.
In fact there is even a cvar that controls the damage sentries do.

..those were the cons.
Pros:
Useful because now we would be able to see how much health sentries have. So a normal sentry has 500 health?

I mean I don't really mean to be mean but truthfully there is no need for this plugin unless you can control individual buildables' strengths.