I know it's silly, but YACoin has the highest market cap since march 2014.
Maybe we should grab the old 0.4.4 wallet and rebrand it as Bitcoin Something, it's the fad these days.
A couple serious thoughts:
1) Even "dead" coins aren't bad investments compared to government fiat! The entire ecosystem is on a big uptrend now.
2) Even now, YAC is benefiting from a reasonable issuance model from an economic perspective. Many coins heavily favor early stakeholders to an unnecessarily large degree. YAC is still profitable to mine with many CPUs, and at <10% annualized inflation rate currently, there is never really a bad time for an investor to take a long position.
YAC is heavily influenced by the market activity. ZCCoin, which is the other scrypt-chacha coin at NFactor 19. I'm optimistic YAC will surpass it in the near future.