Asking FFXIV to be alt-friendly is like asking for more homeruns in football. It just isn't how the game is designed. If you want homeruns, watch baseball. If you want slam dunks, watch basketball. If you want alts, you probably need to look at another game.

Some changes would be nice, like mailing alts or giving them access to your personal house. Given that this just hasn't happened and we are nearing the 10 year mark of this game, we shouldn't expect that sort of change.