Unfortunately, the perfect full-fantasy concept with the same level of detail of Cataclysm or the depth of DDA or DF just isn’t out there.
There’s only a few frequent updating roguelikes out there like Cata, and I’ve yet to hear of one to the very, very exact flavor you are looking for.
Magiclysm is the closest you’ll get to a High Fantasy conversion to my knowledge. Out of the mod roster, I don’t think you’ll find your exact flavor either. It unfortunately sounds like a new mod project to completely overhaul the CataDDA base into a new game. Needless to say, what you’re after, in a perfect sense, would be a herculean task to bring out in full detail.
I can’t say I don’t dig what you’re after either, and would certainly be playing it if it -did- exist.
Your best odds would be to explore all of the fringe mod packs for code and then splice your favorites together, if you are able to do so, and get something close to what you want without having to script things together yourself.
A lot of the Cata code seems to be friendly to general retrofits and re-skinned AI codes to varied extents the last time I took a look.
I know quite a few RLs, but aside from DF I don’t think any get to the level of detailed immersion you’re craving either.
A businessman might be tempted to create a product in such a setting, and I can’t say I wouldn’t buy something like that myself.
The TL;DR of the matter is that a High Fantasy conversion mod that is more RPG-orientated than CataDDA but more Intuitive than DF’s adventure mode with proper immersion development and proper adherence to classic roguelike element doesn’t seem to exist. The best on the market are generally DF deviants, clones, and various other roguelikes that use high fantasy as a base but lack proper depth of concept. The concept is a holy grail to Roguelike players, just like either DF or CataDDA would be if they were in heavy development with dozens of dedicated developers. Perfect if it exists, but unlikely to be true.
If anyone has such a perfect recommendation, do, do let us know.