You want to force your will onto other people instead of giving people the right and liberty to chose for themselves — as every other blockchain spilt I know of did.
And thinking of it a little more: It's not even necessary. If @justinsunsteemit gets control over the chain he most likely make a token swap for TRON. The old STEEM token is likely to be gone anyway.
And speaking gone: What stops me from selling my STEEM or transferring it into newly created account before the deadline? You said it yourself:
Likely to work? Probably not.
BTW: If you look at my other comments I made in recent time: I'm in favour of a blockchain split. It's probably the only way forwards. It's just your “burn your steem” demand I oppose.
To too much a libertarian to accept such demands.