IDK, I have both and I much prefer Theros. But I am a DM and don't really care about race and clss/subclass options. I don't recall, does OftD have anything similar to supernatural gifts and piety? I know it doesn't have anything as wonderful as mythic monsters.
I agree mythic monsters are a good idea, but they’re more of a concept rather than a complete system. The idea of a monster that undergoes a developmental stage is neat but it only gives a few examples not a whole system.
Ya I found that section of the book weird. Although: I'd be lying if I didn't say that I liked the Shadowfell/Underworld Nymph in that section.
Feels pretty complete to me. I was able to make a few myself (with plans to do more) and posted them here: 5e Mythic Updates. There is also a book of them on DMs Guild. Beyond just the mechanics / stat block of the mythic monsters, it is interesting how the flavored them too (both the description of the mythic trait and the encounter text). I feel it is a pretty clear template on how to make mythic monsters. I certainly don't need (or want) anything more.
Well that is where we differ. I don't use published settings so I don't really care if the setting or "world" as you put it feels more robust or hollow. Though to be honest I actually didn't like the lore of the Dragonlords, so that may have clouded my judgement. Regardless, I am looking for things i can use in my game, and MOfT provided more for me:
There are a lot more subclasses in Dragonlords. No idea how they compare power wise. Flavor wise, IDK, that isn’t something I get overly invested in. In general, if PC content is what your looking for the better bet would be Dragonlords.
