Well with most of the FUN under their control, I do expect some of the changes that could happen is that under the fortune of wheel we may soon have Fun tokens to be up for winning. Also, in wining lottery we might have the fun tokens to be won rather than btc which is now. Though this change depends upon admin if they want to introduce something like this.
The wheel of fortune is a new thing so may be yeah, the FUN tokens can be used as the rewards in the WOF.
For the lottery, I don't think freebitco.in would be using FUN tokens since it is one of their major thing that contributes towards their site.
Using bitcoin for the free spin and lottery is the essence of freebitco.in and I personally don't feel they will be changing that any time soon.
Yeah that is true, but just a thought came which in future they may think as btc prices might keep soaring and probably they are already at the least now which is 1 satoshi. So bitcoin rates goes double then it will be difficult for them to run it so thought that FUN token could be an addition or replacement for it.