Though Clodbum is registered on the forums as well as yourself, he is not a LRRP clan member. There is a difference between registered users and LRRP members. You can easily tell because we use ARMAII's squad .xml feature and LRRP members are all tagged as such with the squad.xml. As far as anyone goes with regards to pvp, anyone is fair game. So by all means, enact revenge. Totally fine by any of us and would be what we'd do.
As far as increasing the build limit, LRRP will definitely discuss this. This is a pretty good idea actually; will get back to you once we've all had a chance to discuss it.
12-Hour restarts as well.
As far as dropping vehicles... well... if you release the vehicle close to land, it's fine. If you drop them from too high a height, boom. It isn't a problem nor do we see it as one. If you were to drop a large vehicle from too high a height in real life, it would have a similar effect. That said, first time I dropped a vehicle, the same thing happened (lost a Ural, Fuel Truck and UAZ).. but if you release the vehicle close to ground level (or with the tires just above or below land) it works okay. I have seen some servers disable it (cause of griefing possibilities), others with it active - we prefer it active since it is a bit more realistic that way. Bases are OFF LIMITS to griefing, so vehicles can't be used as bombs!
Hope this helps and addresses at least some of your concerns.