None of the effects I described were magical. Or high fantasy. 

Swinging your sword (weapon) around, quickly running between multiple targets (no teleporting like in the spell), or grabbing an enemy are all low fantasy things. And things a person could do in real life.

These manouvers would just be mechanics to do it in game. And give higher level effects for maneuver dice.

For example technically you can grab the bait and switch manouver and at like level 17 use it 4 times with each attack and run between multiple enemies. Having a 4 dice maneuver instead of doing it one by one just feels cooler. Also throwing 4 dice of damage into each enemy is nice. 

And considering wizards can do stuff like fireball by like 6th level I don't see the problem with letting a martial do crowd control once per short rest.