So make it that there is a CHANCE to drop an appropriate dust box (the ones that are free to buy sometimes) from u8 as a rare or u9 as an uncommon instead of a gem. Maybe 50/50 for u9 and just replace the rare dust drop on u8 with the dust box.
The dust boxes should also as a rare reward 50/50 or so give something other than dust like an empowered box or several booster boxes possibly.
The dust boxes should also as a rare reward 50/50 or so give something other than dust like an empowered box or several booster boxes possibly.