Why sell alts for BTC when they're already priced in BTC? All else being equal any gains you make on BTC are already included.
If Bitcoin went from $250 to $10,000 tomorrow, would you keep your alts or sell all of them for BTC.
Dunno...I would in a sense. My dreams of riches have turned into dreams of
using riches to grow the crypto-economy. Like, buying a profitable business and adding a crypto payment system. Along with the inevitable brochures, of course.
When my dreams-of-riches become particularly manic

, I fantasize about owning several businesses and offering partnerships with college-age folks in the hopes of grooming them into the (majority)owner-managers so I can do the serial-entrepreneur thang: buying up businesses and refitting them to act as "auto-pilot" evangelizers for crypto. Had I been dumb-lucky enough to be one of those insta-millionaires, I would have seriously looked into buying a profitable high-volume gas station and foisting all the crypto-related promo gimmicks I could think of onto the steady stream of customers.
But to be quite frank, I would not cash out completely until crypto enters into a bubble the size and scope of the Internet bubble as of the close of the '90s. Not until then.
Lord knows, we're a long, long way away from that scale of mania...
And as for me in the real world, I'm scrapin' along on broke. Like any would-be entrepreneur in the real world, I have to start nano-scale small.