Luddites Indeed!!
TCAS was for many years not considered for the SE Section's A/c due cost & the fact that being presented with multiple targets in & around a busy CTAF actually can work against you in a SP environment.
Using that argument, one should also remove the EGPWS, as the whooping can be distracting when shooting an approach. I myself find it difficult to find the inhibit button when dropping like a bleeding stone after missing my TOPD. While were about it, lets also take out the wx radar as it could distract you from trying to visually navigate around those line of storms on that dark night, think of the money it will save.
Straight home and don't spare the horses