Adding more coins is definitely a right decision, but I don't think you need Roulette on your site. You are a good working dice site with 0.7% house edge. This is what must be attractive to gamblers, especially for those looking for high speed in auto betting. You can't offer such a low house edge with Roulette and it's hardly possible to create a Roulette more attractive than that on other sites. Or am I missing something here?