Hey, I added Vilja and ViljaSolstheim to the guide, when I started my playthrough last year.
So far I have not encountered any major problems, all her quests and scripts seem to run fine, however my character has not been in Solstheim yet, so I don't know about that part.
I would not merge these two mods. As a rule of thumb I would not merge mods when the author intended one esp to overwrite parts of another esp, as is the case here. Any "conflict" between Vilja and Vilja Solstheim is obviously what the authors intended.
Two minor bugs with Vilja in this guide:
- She has a very obvious neckseem. Might be better or worse depending on your re-texture mods. I gave her Sophia's skin textures and that fixed it.
- She sometimes has problems drawing a shield from her back, gets stuck in the draw weapons animation, then a few seconds later fights with an invisible shield. Nothing major but I guess some issues with her wardrobe system, animation replacers and maybe FNIS?