As it is right now, most of newcomers seem to be completely unaware of recruitbonus, and recruitbonus itself seems to benefit experienced mayors more than anyone else.
(I could be wrong on this) Assuming that most new players either look around and quit without even a hour of playtime, or stay and make their own town, I imagine that claiming recruit bonus is extremely rare occurance.
What I would do to change that is put more emphasis on that knowledge and cons of just creating your own town as soon as you log in(and therefore losing the chance at claiming the bonus), and re-distribute the bonus so it benefits the "recruit" more than the recruiter.
So the change I would make is 1st make sure that new players find out about the bonus, by any means, but most likely by adding a "book" to starter inventory that explains it very briefly.
Secondly I would Re-distribute the reward so that the town gets $2500 and the "recruit" gets $7500 instead of the other way around
And thirdly and maybe most importantly, change the creation cost of a new town to $2500-$7500 (depending on how strict you wanna be with it)
So the "early progression loop" would be to join a town, grind up some MCMMO levels for voyager rank, claim the bonus and from there decide to either stay in the town you joined or use the acquired money to create your own town.
This would in my opinion encourage players to do a "healthier" start instead of just rushing to make their own town
Which would in turn make the entire game "environment" be less about creating your own town as a first step and then trying to "pull people by their sleeve" and "drag them into your OWN town" and more about joining towns and cooperating with others in a healthy manner.
Also important thing to add here would redistributing the town's "agency" so that the recruits have it in their power to replace the mayor if they wish so. This will not only stop the mayors from mistreating their recruits and behaving like both their town and the people in it are their personal property and maybe even discourage "malicious" people with intentions of creating "tomato farms" from even trying in the first place.
(Also, there is a requirement for a person to own 1 chunk of land for them to claim the bonus, is this really compatible with new quarters system? if a quarter does not count maybe completely remove that one?)