I migrated over completely myself but what if something like that happens in Hive like in Steem in a couple of years and we have to move house again.

There is only one true vote, with your wallet and your feet. The more time I spend in crypto the more I realize that we are also shaping highly coordinated communities(call it 100% democracy instead of 50% majority democracy). We migrated because as a community, we recognized there would be more value for ourselves if we migrate. Interestingly enough, the hard-fork seems a beautiful democratic construct. You can keep the old AND go for the new. You can try them out and see what you like best, then swap completely if ever. You kept your STEEM and received HIVE, you then choose what to do with your life. Yes we did remove some members, but that was the value proposition. The active community creates the value and thus decides where to invest it.

HIVE keeps hard-forking, and that is OK.