I'll admit, I've been considering such a conversion mod. With the Villagers being the primary playable race, Pillagers the primary invaders, and kind of building off of a mixture of both games' mechanics that way. Such as Redstone being a possible replacement for magma when it comes to fuel free smelting or some way of spawning resources to at least kind of mimic the Minecraft capabilities of it until moving fortress parts is added in. And players/humans being outsider adventurers only but are stronger than the villagers and pillagers in their baseline stats. Just something that came up in my modding brainstorming that stuck.
Speaking of Villagers and Pillagers, I actually added in Villagers as a civ into DF, alongside Illagers (I simply made Pillagers as their name for crossbowmen). I also gave Villagers Iron Golems as pets, but I haven't given the Illagers their Ravagers yet. The mod is a bit loose with how the Illagers work, kinda turning the different mobs into names for their jobs (vindicator for axeman, pillager for crossbowmen, etc). I am planning on finding a way to give the illagers an "Evoker" caste that can summon Vexs.
Also, considering we don't understand the Villager "language", I ended up giving them (and Illagers) a language based on Swedish, considering Mojang is a Swedish company.