The respawn system also goes for nearest spawn point, so that base sunderer is the default if you died inside the biolab. And Tech Plants are total bullshit to take. Not sure what brilliant person decided to put all the useful objectives inside the shielded building. I spent a few hours defending one last night (and raking in the resupply xp) from pretty much everyone on the continent. The only time they got past the back doors were lag spikes. And even then they just died horribly seconds later.