The market will help to a certain extent, because land in the countryside is not going to be assessed (and therefore taxed) nearly as highly as land in the city center. "Vacant lots" out in the countryside are great, but in the city they are a scourge.
That said, the government will need to step in to protect urban and semiurban greenspaces/greenways, because LVT would indeed encourage development of those. (Extreme example, Central Park would be assessed as worth billions of dollars and taxed many millions a year).
I think, ideally, local and state gov'ts would either buy or grant tax easements on urban green areas. If done right, LVT could then incentivize developers to either use the land for buildings, or turn it into a greenspace, avoiding the gross middle-ground of parking lots and other low-value and use.
We were under utilizing it and now its a hospital among other things.
In the EU there are "set-aside" payments to encourage farmers to do this, and national parks and other restrictions to protect the more valuable habitats.
Land out in the countryside would not be hugely taxed under this system.
LVT cleans up this incentive some by putting taxes in place in areas where the land is more valuable. I think Georgists would argue for doing that _and_ removing property taxes, specifically so you aren't taxed for the things you own.
I'd prefer to have more direct spending on services than we have, so the money isn't proxied off a building, or how many windows you have, or whatever harebrained scheme local bureacrats might invent. So you just pay X a month to have trash taken; X for sewage, etc etc. But I'd say that moving to just taking money in a way entirely unrelated to service consumption is going in the wrong direction.
The discussion is about shifting more of the burden on those profiting so greatly off the land they own.
Unless those you cash out from buy it because of what it currently is.
This is targeted at that parking lot in San Francisco that really should be an underground parking lot with 1 story of retail at the ground floor and 4 stories of housing above it.
Hmmm, I don't get this point. If the incentive is to sell of develop your land what happens to "fallow" land that serves as a habitat for plants or animals? Seems like this would encourage developing land even if it's in a suboptimal location and would otherwise remain fallow, which seems less sustainable than the status quo.