From the towering Wilhelms Fist to the underground Badmoon Hole, keeps are impressive pieces in the lakes, surrounded by the battlefield objectives and are central to taking control of the zone. So what happened to them? Where did the siege warfare go? I cannot speak for each server, but certainly over in Karak Norn (EU) the keeps are simply a time sink for the attacking force. Very little actual warfare takes place over them now. Before the addition of the extra ramp you could defend a keep at the lords room with a wall of tanks, now with the addition of an extra huge ramp up to the key, vital, heart of the keep (yeah, because it makes sense to have your local architects design that) a tank wall is all but useless due to it being stretched so thin and a mass of players will just rip through a keep without the chance of a smaller force being able to hold back the mass tide the keeps fall quickly now and without much incident.
Siege weapons have remained an absolute joke for the last year. Sod all damage, too expensive and completely ineffective at contributing anything meaningful to a siege (rams not included). The guards, even as champions are nothing more than a passing thought as they disappear in the aoe. Rewards for defending the keeps are pretty much pointless as you gain more tokens from general RvR than a slim chance of defending a keep and getting a reward bag, not to mention getting the part you actually need.
The battling over a keep which would have me on the edge of my seat as I sat in the tank wall waiting for the surge, or the breaking down of the final door to charge in to meet my fate or find my glory has gone, keeps right now seem to be nothing more than a time sink. What once was a possibility of a small force holding out against massed ranks has now descended into a glorified battlefield objective.
It's not about rewarding people for taking or defending keeps. It's about making the sieges enjoyable yet tense, defendable with smaller numbers but takable with the correct tactics and having players feel they are contributing to the siege on an impressive structure rather than standing about in a flimsy cardboard box.