there wasn't really any counters to heles/orcas so people just accepted ramjets destroying them.
in smaller games its oddly balanced, in larger games its terrible, making orcas/heles a waste of money.
you couldn't do it in the original renegade and you can't do it in renx.
pretty sure the 30 second limit is to stay, however if you kill the buyer you should be able to steal the vehicle.
back wf isnt really needed, unless in smaller games i guess and its still uncommon it'd be useful
i prefer to have 2 sets of mines for the agt and ref hop.