The dual touch screen indeed poses a problem, but if they were dedicated they would think of a solution. It’s not impossible.
If a Switch DS collection would happen, then they could include: Dawn of Sorrow, Portrait of Ruin (the weakest of the IGA trilogy but it does have its moments of greatness), Order of Ecclesia, and maybe even Mirror of Fate. As a extra bonus they should include Adventure ReBirth. I skipped the last collection but I would be ALL OVER this if they make it happen.