Well, building a SH beside the forest conveys advantage - you are close to the highest yielding tiles, Ghosts and Invaders and also the PoP; not such a bad thing if there were to be a disadvantage or two to balance that.
I am unsure about the idea itself. If the Pioneer spot is the main concern much easier, in the same vein, to kick only towns occupying the one pioneer tile rather than the whole forest. On the other hand there are advantages to an individual town locating in the forest (as for clans locating on the edge of the forest) so balancing that oot a bit by random relocation from time to time might have some merit. Might take a bit of programming - you can't really have it interfere with, for example, someone with troops reinforcing the PoP or participating in an onslaught against the PoP.
All in all, leaving the Pioneer spot to one side, I doubt there is enough merit in the notion to justify the time and effort of a change nor the risk of unforseen consequencies.