An out of the box idea for shidduchim is for the Litvish world to adopt the Chasidish shidduch model. Beshows, shidduchim setup by the parents, extensive pre-shidduch research, young marriages, etc.
It works very well for them. Better, I might add, than our own system works for us. And it has yet to be demonstrated, as some posters here are bound to allege, that us adopting the Chasidish shidduch system won’t work out as well for us as it does for them. Despite the naysayers proffering a host of imaginative reasons why it can’t work as well for us as it does for them.