I'd, personally, just prefer to have the HUB to have a healing station; if you're "home", you should be safe, and waiting around for the HP to slowly doesn't sound like a fun gameplay mechanic.
And in case someone brings this up: sure it could be abused - deconstruct the HUB and take it with you on the go... so what? You might as well build a sky pathway across all the dangerous lands if you so chose; but that's not really the point of the game, and if someone wants to cheese it, I say let them.