I think DwtE is reasonable where it is since at 3rd level it lets you be really good at the skills but not really epic. You can tumble freely and jump well enough to make the skill useful in some situations.
Empty strike, on the other hand seems too strong as a class feature when wis is added to damage. Assuming a wis mod of at least 2, that is getting the benefit of weapon specialization on all monk weapons. This in addition to allowing dex as the attack and damage stat (free weapon finesse).

What about if empty strike only adds wis mod to attack and things like grapple? Then you have the capability to go toe to toe with a full BAB as far as being able to hit but not necessarily being able to deal as much damage with each attack.