I've been looking to experiment with browser mining solutions recently but the offerings are really lacking imo. It seems to be a simple problem (let users mine

I've been looking to experiment with browser mining solutions recently but the offerings are really lacking imo. It seems to be a simple problem (let users mine in exchange for virtual goods ~proportional to the solved hashes) but bar CoinHive I ended up with nothing promising and I can't really justify their 30% cut.