"one of the larger stretch goals for King under the Mountain is a mode where you play as a human wizard or necromancer, controlling a single avatar character while you use magical constructs and golems to build up your lair while you improve your knowledge and experience of spells."
"the current focus of development is having dwarves as the first playable race in King under the Mountain but they're not going to be the only ones you can play as! Next up we'll be introducing orcs and how their tribal, martial society offers a different gameplay experience."
Dude, okay, your designer doesn't understand something.
You can only make one game at a time! You Should only make one game at a time!
The thing is, a simulation takes as much as you can possibly put in it. There is no point where you should ever divert your efforts, if you still have the main goal of making a simulation. Any diversion means the original simulation takes more time, and is quite like making two games at one time.
Making a videogame is a singular purpose not to be split amoungst multiple projects.
Any time spent detailing the orcs means time not spent detailing the dwarves.
Furthermore, most DF clones I have encountered so far beg for a more detailed, in-depth system that you could only make as a singular, many-year project.
I didn't buy into the "we don't need another DF" garbage though. For one, DF won't see a proper fully refined release for possibly years at a time. Why not follow some other potentially great game, as I had my fill of 40d and such.