~the only difference would be if they decide to change the unit of account to XFUN.
That's not going to happen. It's a side chain so XFUN is FUN but transacted on a different blockchain.
I understand that FUN and XFUN are essentially the same token but represented on different networks. It was just my theory that if users' tokens were bridged over to Polygon and that became the preferred version by FreeBitco.in users then it would make sense to have our balance on the site displayed as XFUN.