It is a simple matter, no need to complicate it. The importation of settlers on occupied land is a crime.
ALL SETTLERS LEAVE, except those that married Cypriots. We have hundreds of thousands of Cypriots spread all over the world. Giving any kind of incentive to settlers to stay, while not providing incentives to CYPRIOTS to return is nonsense! To take it a step further- let us provide serious financial incentives only for TURKISH CYPRIOTS to return to Cyprus, and none for any other ethnic group of the diaspora. Even if such a scheme leads to an alteration of the demographic makeup of the island, it is preferable to having a favorable balance which includes settlers. The problem is not the proportion, but the presence of settlers. 70-30 GC to TC is preferable to 82-18 GC to mainland settlers.
There is no humanitarian aspect to this issue. The settlers did not materialise out of thin air, they have hometowns and villages to go back to.
Pontians in the south are about 10 000, with residence permits like all other EU nationals. They are not settlers brought over and given TC property. And they do not get Cypriot nationality neither do their offspring.