I don't believe it was ever added to the wish list. http://fgapp.idea.informer.com/
The devs ask that all feature enhancements get added there so that the community can vote and they don't get lost in the forums, like this did.
I didn't even know this existed, I found 2 requests for the functionality ((Force Rolls to Dice Tower and /Tower version of /Roll command)). I bumped them.
You may want to check out the Requested Rolls extension on the Forge. It allows the GM to have a popup show on the players screen to make a roll, and you can for the roll to go into the tower. It also does other things as well, you can read the wiki for it.
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