Maybe all this "BTC blockchain as a platform" stuff is too tangential and undermines (no pun intended) the potency of BTC as a cryptocurrency.

Maybe there could be a "Platform Test Coin" to beta test all these far out ideas, then spin off the successful projects to their own independent alt coins?

Even assuming the BTC network can handle a lot of bloat, wouldn't it be cheaper for users of XYZ platform to use a (less expensive) altcoin blockchain? I'm not an expert on inserting data into a blockchain, just thinking out loud here.