a wow token doesnt create gold for one so it wouldnt affect the economy in anyway and the main thing in wow will be gear of which most items you want will be in dungeons and raids so gold would only help with having plenty of consumables and maybe the odd BoE drop that is actually usuable, more than 99% of wow players in classic wouldnt even be able to afford a token at even if it was at 500g, buying epic mount and riding will clean the average player of all gold.