The Georgist answer is that the government wouldn't decide the value of the land, the market would. If the government is setting it, it's almost certainly not pricing it optimally.
Land is taxed at very low rates, and it's almost always bundled with property taxes. Instead of taxing land at a few percent, Georgism says we should be taxing it at 100%. That's a huge difference from what we have in play today.
I once heard someone say that land value taxes would be worth it even if we burned the tax revenue. I almost agree with that. The point of land value taxes is not just that it raises money, it's so the downstream effects. We want it to change people's behaviors. The incentive structure that it creates for developers, land owners, renters factory builders, and City planners is why the tax is so good.
I've written one small open source library, which I publicized a little bit back when I first released it. Like you said, I wrote it mostly to scratch my own itch, but it was really nice to see it get some use out in the wild, and I have gotten a few emails about it over the years. Personally, I really enjoy getting any kind of emails about it from people who are using it or who have questions. (To be fair, I've never gotten the murdery emails abou it)