I strongly agree that though 4.2 changes are not perfect, they are nonetheless improvements. The main purpose of this fixes is to answer housing SUPPLY issues, especially for FCs who have never owned before. Regardless of dummy FCs, number of new small houses should be able to satisfy majority of this issue, in addition to the surplus plots freed up by FC/personal relocation. Yes, amount of housing may still yet be % of the total player population, but please do keep in mind that not all players wants a house!
4.2 does NOT, however, cater for the demands for medium/large housing (only a few hundred in total per world). If you are screaming for the "fairness" of owning larger plots, then 4.2 is not for you. There will be blood, sweat and tears in the upcoming 4.2 war for larger housing (between FCs and personal relocators).
For those arguing for instanced housing and/or complete revamp of the housing system: have you any idea of the amount of resources that will be required? If so, that means every other contents will need to be pushed back. There was plenty of this argument back in 4.1 housing rush. Yes, there is no denial that the housing system may be a mistake from the get-go, but please do not deny dev team's efforts and bash them for trying the fix the issue alongside their packed content release schedules.
Regarding post-4.2 reselling: yes, it will continue - dodgy practices will always find new methods to avoid the system. Several methods can be 1) as mentioned, buy from dummy FCs, 2) sell relocation plots instead of relinquish (making med/large the primary target for horders), 3) having peeps trading/cancelling placard transaction until housing relinquish timer ends, etc etc etc. However, because of the extra effort, the number of house resellers abusing the system WILL BE CUT DOWN, which is the original intent of this 4.2 update. In fact, the new changes will allow diligent players who consistently looking for empty plots better chances in acquiring a house fair and square (regardless of plot desirability).