A lot of these are tied to classes that aren't in the game so hard to say if they actually got cut. Traps are likely the Huntress thing along with spear combat, mines are Shadow(saboteur) and Brands iirc were Templar oriented. It'd make sense for them to have like an "Artificer" skill category for both traps and mines, and some sort of Holy skill group that'd have Brand(maybe reworked to be more holy in nature) along with stuff like Dominating Blow and other similar melee/summoner stuff that Templar was based on.
Doesn't seem there's any mobility skill though, just ways to change the base dodge roll.