It may seem like an exploit, but the starting village scout was designed to lose its 'efficiency' as a support after reaching the port.
In place of the village scout, there are already 2 hirable mercenaries in Lodeen Isles, so keeping the village scout (whose level is capped at 7) is not really wise.
I recall you can buy teleport stones in the item store. If it isn't there, I'll make a note to add it in, for QOL purposes.
Thanks for pointing out!