Current state (as far as I know it): after declaim everything is lost, new claim costs 4000 lp.
How about this?: after declaim amount of tiles are used are saved, new claim costs 4000 lp and that about of saved tiles can be used without lp cost (or reduced?).
Why I would like to see it in the game: as I started playing, I settled on where I spawned; already used like 16 000 lp for tiles, I choose quite bad location and would like to move, but spending 20 000 lp for me is a big deal, since I will take almost 2 days only to refill these lp.