Flash is situational, useful for speedruns when AoE enmity is needed without running dry on TP, and T7/T7 Savage for building aggro while facing a desired direction.
Awareness is extremely situational, Shiva EX bow phase, T11 Cube add just to name a few.
Haymaker is a no go. As its only useful when tanking, you're probably going to be in defiance, and therefore wanting to build wrath stacks. Your Inner Beast is going to provide more damage and mitigation than Haymaker.
Featherfoot is only useful for speedrunning large pulls, i.e. lots of auto attacks. Most mechanics cannot miss you anyway.

Your cross class skills will be: Provoke, Convalescence, Internal Release, Mantra/Second Wind (preference), Flash/Awareness (situational for encounter)