an Unlimited Server has had it for awhile
Amsterdam Unlimited's name has nothing to do with unlimited buildpoints, though it does have higher than stock buildpoint settings.
a dretch is trolling below the turning range of a badly placed turret

Is this turret visual range indicator currently implemented on your server? If so it isn't working for me.
oh, i forgot to tell everyone how to enable that.
the cg_buildableSpaces cvar setting determines which buildables will have effectivity spaces displayed.
0: don't show buildable spaces;
1: show spaces for only "support" buildables: reactor, repeater, defence computer, overmind, egg;
2: show spaces for only "offensive" buildables: machinegun turret, tesla generator, acid tube, trapper, hive;
3: show spaces for all of the above buildables.