Neat idea (editing UX need a bit of work, perhaps); I would much like to see _all_ hints in parallel on my screen.
Solving a crosswords is a bit like solving an equation system, since the grid is equivalent to all row questions AND all column questions combined in a big mega-confunction, so it helps to see all at once.
Solving a crosswords is a bit like solving an equation system, since the grid is equivalent to all row questions AND all column questions combined in a big mega-confunction, so it helps to see all at once.