Right for better or worse here goes:
All those crappy skull, flame, marijuana leaf scaled monstrosities from eBaY.
Unnecessary restorations - with age comes character.
Big chunky heavy scales.
Acrylic scales.
Bling.
Horn scales.
Kamisoris - never used one just don't like the aesthetics.
Most custom razors - not that I would buy one anyway but I look to see what they are like, I don't know that I have seen much advertised on this site (no offence intended to any vendors) custom wise that I really like. Some of the stuff in show and tell has been pretty mind you. I suppose how a razor feels and shaves is important and I would expect good balance and good shaves from a custom razor.
Not really a fan of gold wash etc, just seems to be something else to avoid damaging whilst looking after your razor.

Probably could have just said nothing crappy from eBay, and anything fairly understated and simple, with the exception for my desire to own some mop with silver inlaid scales.
Either way there you go.