I haven't seen much discussion on this list of what will happen when the blockchain forks due to larger blocks. I think the debate surrounding this issue is a storm in a teacup, because transactions on the smaller chain can and will appear on the bigger chain also. There is nothing tying transactions to the blocks they appear in.

Miners will migrate to the bigger chain in search of higher profits due to higher volume of fees. They can also collect the higher fees of the smaller chain by including into the bigger chain as many as possible of the transactions from the smaller chain.

To stop this from happening the smaller chain would somehow need to change the serialized format of their transactions so the signatures would no longer be valid across chains.

Incidentally I read somewhere that the losing chain would have their coins sold down. Trying to sell the smaller chain's coins in the short term at least is not advisable, as those transactions will appear on the bigger chain too.