D&D 5E Ideas for multiclass feats?

[Lanliss]

Dexterous Fighter
requires one level of Fighter, one level of Rogue

+1 to Strength or Dexterity score

you can now sneak attack with any weapon that does not have the Heavy property

 

[Horwath]

Devoted pact; requires paladin and warlock:

Your paladin and warlock levels stack for calculating eldrich invocations(number and power)

Your paladin and warlock levels stack for calculating lay on hands


Beastmaster stalker; requires rogue and beastmaster ranger:

Your rogue and ranger levels stack for calculating sneak attack damage

Your rogue and ranger levels stack for calculating beasts HD and ASI(latest ranger UA rewrite)


Primal shifter: requires barbarian and moon circle druid:

Your druid and barbarian levels stack for calculating power and number of barbarian rages.

Your druid and barbarian levels stack for calculating power of wildshape.


If all or some of the feats are too weak, slap on +1 to any ability on them.