I'm obviously a fan of Zcash, but let's be honest, speed and security are some of the biggest weak spots. For years I've enjoyed the Dash experience of "in 1 second it's permanently irreversible." It's a major competitive advantage. With Zcash, waiting ~25 seconds (after the new faster blocks are approved) to get some kind of security, then many minutes (at least) to be reasonably (but never fully) sure the transaction is finalized, isn't optimal. And, having to worry about mining pool centralization (which was a big problem just recently) isn't optimal either. Both of those are what mainly keep me using Dash right now. Crosslink looks to be a good step towards closing this gap. If not Crosslink, another solution to get finality in Zcash much, much faster than we have right now should be proposed. "Nah it's fine now" isn't an option IMHO.