DASH build some amazing tools to improve fungibility, but I wouldn't say it's in the protocol... As we all know the big problem of bitcoin is that it has public addresses and balances. DASH just copies this flaw but adds tools to it (darksend) to make the coins private and unlink them from identities. For example when you buy DASH on an exchange and send it to your wallet, that address is linked to you. But when you use darksend to send the coins to yourself, it will be unlinked! That is the real improvement. As far as I know, it's impossible to have a cryptocoin which doesn't have public balances for addresses, but that would be better. If that ever gets implemented in DASH somehow, it would be fantastic!

Also, i'm a bit concerned about the masternodes largely being hosted on external services (I saw a post about the outage of Vultr where some nodes are hosted), but I guess when we have enough different nodes, this isn't really a problem...

but overall, I think DASH does the job. It's good enough, it works! looking forward to the evolution vid