I do like the idea of culling crappy towns and improving overall town quality, but I feel like this hurts towns like mine that are meant to be a "build town" a lot of precious time is already spent planning and then building, in addition to funding said builds, which often requires buying exorbitantly expensive materials, like wood. Build towns such as mine also tend to have very few players, since the community is so saturated to meat head pvpers, so it really isn't feasible to try and run a build only town. Meaning grinding for this sort of town will just be more of a chore if taxes are increased in a significant fashion... It seems like the town, in order to survive, would be forced into being more pvp focused, since that is what gets more players, and honestly, any players at all. And I genuinely don't want my town to be one. And by pvp town I mean one that recruits as much as it can. Also, there's only a handful of us build towns left, Covens Crypt and Volterra, which had some beautiful builds with lots of effort put into them recently fell. So making it even harder to maintain might make them suffer even more.
tldr, build towns might be negatively impacted by this despite part of the goal being to cull poopy underground towns that don't really matter