I utterly abhor anything by Rickenbacker with a passion, I dislike Gibson, Ashdown (as mentioned previously) headless basses, Fender Custom Shop Relic instruments - or any reliced instrument for that matter, single cut basses (again, mentioned previously) pointy basses, Joyo pedals, LED's, gold bridge/machines - tacky, tacky, TACKY! Basses with fanned frets - why do these things exist..?!!
Ooooh, almost forgot - slapping a bass! No need!! Ever!!
I could go on...