Not sure I see what you're seeing. The change is players don't have to sit at the sign anymore, if a plot opens up they are put in the same priority as relocation players (and it's random).
If a player pays another player for a plot they're paying for the chance that they win the lottery, I'm sure they'll have fun with that lol. Issues still with FC selling but to fix that I think is going to be a bit more difficult without some other major changes (also FC if wanting to relocate would have to follow the lottery system too).
Lottery system will turn itself off for specific instances if a threshold crossed in supply of that specific type of house (like if you want a goblet house and there are 30 open smalls in the zone already).
No it has to do with supply. There are a lot of different ways to go about it, but to keep the example straight forward if every plot had unlimited slots of itself (so if you wanted space Y in area X you could have it) then all these issues would be dead. The core root issue is supply, fix supply all these other issues die. Of course if you fix supply sloppeh you might make some new problems but yeah lol. Part of the supply in my comment is including not just supply # of houses but also considers things like supply location and supply size (because for example goblet is undesired).
The only reason these things get sold as they do, and people want ways to stop it (like the timers) is because there is a supply issue. If there wasn't a supply issue then there wouldn't be a market to sell houses (which we currently have).
I feel like you're upset or something, the whole thing doesn't read very nice. Clearly I was suggesting (mostly in jest) that GMs read the reddit where people sell houses and punish players for selling houses (you can get in trouble for selling houses, depending on how you do it at least lol).