The OP have a nice Idea if it take a while to build up to max and not have someone spam the move 500time 1 battle then it a great Idea.

@Rentahamster getting TP is quick to get even if you slow it down you just going to make people not do anything for hours lol. It best to have other system like the OP saying and when you do WS that 2000tp you get more of the other Bar.

i love this idea sound better then two hour or 1 hour.