This is likely to be an epic fail. There are some issues with the current structure of the T20 Bash, I'll grant you, but this is not the solution (and not just because having Championship games ongoing when half the players have been taken off to it and gigglesville)
The issues, as I see them, would appear to be:
1. We don't get a high enough quality of international players in, which then means...
2. People of the younger variety tend not to be interested...
Make the existing competition two divisions, eight games per team, schedule it over two weeks and allow each team three or four overseas and you acheive more or less everything you need to...