Based on the Poll results, I just want to add IMO Creature is a better, more unique game than many of your choices. I would strongly suggest not getting rid of it if you had a nice one. But since it's the roughest shape, it may be better to get a better one.
My bottom would be STTNG, GNR and BSD. But it might be good to keep STTNG with STLE and then see if you really want to keep both.