I know we had free ETH to spend during PB4, but we hit a massive supply of illuvials in a very short time.
In my opinion, the Overworld end-game is to farm high tier, high power level stats illuvials. So the idea here is instead of simply re-rolling the illuvial stats, we could combine two illuvials. The solon cost wouldn't need to be as high as it currently is since one of the illuvials would be burned in the process.
The combination process would be similar to fusing but would only involve two illuvials. They wouldn't need to be leveled up and the resulting illuvial would be of the same stage.
This could be straightforward and be completely random, or it could be more complex, with a way to increase the chances of certain traits from one or the other illuvial being selected.
