Rig an electric-fuse firework to a plug interface at each respawn point. Each team gets one Counterstrike-style detonator box with a killswitch and a compatible plug. Maybe designated bombers go pistols-only. Plugged in, armed and button-pushed, the box delays the detonation by 20-60 seconds, and it flashes and beeps loudly the whole time; maybe it even counts down in a pleasant female UK accent. If the firework detonates, the respawn point is destroyed. That would be awesome.
KWA KM4A1 - CA MP5SD3 - KWA KMP9 - WE Wilson Combat CQB Elite