i feel like the gravity hammer is a very overlooked weapon, but it shouldnt be! there are so many cool things you can do with it (deflecting projectiles, launching things, and everyone knows they have used it to launch the ball holder in a game of griff at least once). the part that is really amazing though is that you can use it to change your direction in mid-air. it has so much potential that people dont see! it is like a nade-hop that is a lot easier to control well what im saying is that i would like to see it be used in more maps (this really only applies to puzzle maps, seeing as how it is a pretty bad when being used as a weapon) i think it could be used to create some really cool new obstacles!! for example: in my puzzle map you need to use the grav hammer to get to higher platforms directly above you (hard to explain, check my fileshare if you really wanna see [xIshrpshooterIx]) start brainstorming!
I can see what you're going for. And yes, the G hammar is overlooked, but it's kind of cheap. On Guardian I hate people who just camp over by the OS room with it. I'll just be on my way over there la-dee-da looking for a sniper. Then, I drop down and BOOM. Camper gets me. Aside from that, the fact that it can deflect rockets makes it pretty unique. And, you're not the first to use it in a puzzle. BuddhaCrane's The Rack on Tours (The Raconteurs) uses it to get to a higher ledge. with a teleporter.
Well at least the golf club will kinda bring it back. Noobs will place it on their maps because they can; just for the novelty of it. It's a shame that 9 times out of 10 their maps suck or are unfair infection maps.
Sadly this is only possible because in Grifball damage is turned town and because the ball carrier has more health.