>Sit tight and imagine the Morrowind installations screens
I'm imagining. Music helps with that, it really needs some Lore Images and Texts and Stuff during loading.
If you're not just generating Terrain, but also Lore and main Events etc. you could showcase a Year xx counter and display Images and Descriptions for what happen that Year for a few really big Events, like "Year 219: The giant Crab was finally slain", or whatever. (Update: You seem to have that in Place at the top left, please correct me if I'm wrong) I'm imagining a lot while waiting. While it is slow, the good Thing is, it's making me excited for playing, really needs that Polish.
...still Imagining, getting a bit less exciting.
I got 133 Villages but 0 Towns and Cities, also only 1 Camp. Are they not in the Game yet or did I just get rally unlucky?
Only Mysterious Stranger Background?
While I'm flying in Godmode to the Devilspire, Dungeons sometimes had massive Lag to the Point of unplayability inside them. Why is there so much Crafting, Gathering and Building, I don't think that's needed. Also the World has massive stretches of empty Terrain, you could easily cut the Size in 1/10th of the current without hindering Gameplay or let it fell less vast. Systems seem to be there yet, which is nice, I don't think I encountereed any Bugs, and it certainly feels like Devil Spire 2, as in the original but with additional Stuff. I wouldn't call this a Verticle Slice however. A Verticle Slice is a small Part of the Game done to absolute Finish, fully polished, with final Assets and every System used in that Area working correctly. Your's is kind of the Opposite, everything is there, everything seems to work as far as I can tell, but nothing is polished.
First and Foremost, improve the Performance, generally on the overworld it handles fine, but in Dungeons or where there are huge Amounts of NPCs not so much.
Then focus on filling the World out properly, it shouldn't be this Empty. DS was rather tight and fine, DS is the opposite and I don't think that's so fine. You need a more interesting World generation, more Points of Interest to appear. UI, Sounds and Graphic need an overhaul. NPCs should have more interesting Routines instead of just walking idly around their Huts, but that reequires proper Props in the World for them to use.
Trying to ride a Horse was Funny. Quests are a bit unclear, I am to kill Rhuja, but there's no Information about Rhuja anywhere, not even when talking to NPCs. And I'm not going to wander 10km2 blindly looking for Rhuja.
Third Person Mode Camera doesn't carry over when entering or exiting Menues. Which need a pretty much full Redesign I think.
All in all it's mostly walking through empty Fields, or sometimes flying in Godmode since I got bored eventually, but the few Parts that are actual Gameplay do feel like DevilSpire2, and are engaging *IF* you envision what this would/could/should look like in the Future.
Got Ending F, I assume that's bad. There was almost no visibility in the Spire, maybe because I didn't have Torches or anything, maybe just bad Lighting.
Needs work, some Systems I think are unecessary or need a bigger Change, generally it works, and the main Systems are nice to play. Has quite some Potential if done well.