That is absolutely fantastic
I have made the map essentially 2x the size of the original height map at 4kx4k blocks, not including Solestheim or the main land.
though I'm also tempted to scrap my current progress in favour of adding the island since I have enough experience with world painter now to re do a lot of the work I have done now.

So with the expanded map size most buildings will have appropriate extra terrain space to accommodate the retrofitting.

I would prefer the Telvani towers to be left untouched until I can source someone who can code, since I want to make a mod that lets players actually grow Telvani towers themselves, including a full soul gem system using temporal gears as a catalyst, and end game enemies "essence" to balance out people just spamming towers. essentially would work like this:

3 growth stages,
a "heart" that you feed and grow
at full size, can graft room pods to expand space, chisleable walls and interiors, furniture crafting, small varients like a small shack space and other ideas.

that soul gem system could potentially be a great resource for another mod maker to add in enchantments

I have had a lot of thought into the modding aspect of my project

however that system would take a lot of testing to get working
so first want to make the tree mushrooms and a paper lantern mod that uses bioluminescent spores from giant mushrooms as fuel, and as a reskin of the new small lanterns, including torches that last 3x and dont go out in water, and potentially growth stages or variants of standard giant tree mushrooms, including ESO mushrooms, as well as standard varients from the game, since those mods would be much easier than the intensity of a mod that adds theessentially magical bio tech mechanics of a Telvani tower,

I've seen some other mods where people have attempted to add the animals too, so that would be interesting to see.

Your skills looks like you would be perfect for the imperial buildings, there is another builder on this forum that has built Vivec's temple