Wonka and DI are questionable themes?
DI is my 2nd favorite pin, I give JJP and Pat Lawlor a lot of credit for having the guts to take on an unlicensed theme. So many of the classics were unlicensed and had a ton of innovation for the day, and that's something that I miss. I have no idea how much money is paid in royalties for each sale, but I'm all for smart unlicensed themes which allow more of our money to be spent on development and toys.
I am looking forward to Wonka more than any other recent game - so much so that I've ordered the CE (even though I will acknowledge that it is overpriced). I've played the SE and the initial software is reasonable for a new release, although I am betting based on their previous releases that the software will become excellent after a while.
There is no reason JJP should fail except for things outside their control (economy, pinball hitting another major slump, etc)