What do you think of this control scheme?

sketchbookgames and I are developing a box2d editor for platformer, rpg, and adventure games and we trying to define the basic rules and controls. My idea is to have the games absolutely mouse controlled but we have some problems.

The control:

* main character will follow mouse movement at slower pace.
* mouse click to do stuffs:
o clicking on self will pause the game and open interface, such as menus, inventory, etc.
o clicking on NPC will open a dialogue.
o clicking on items will bring it to inventory.
o clicking on nothing will make character jump.
* Objects around are interactable when character collides with them. Like crates tumbling and certain wall push.

Problems:

* Will players confortable with the controls?
* Will the clicking on self function clash with other actions?

Let me know what do you think?