I too went to just a hard card wad for my flinter years ago. The vent hole gives enough cushion. I string my wads on a length of string from the strap of the bag as the pin hole seems to make no difference but in make the holes off center so the two over powder don't vent any gas and the over shot with the hole doesn't want to pop back from air pressure.
I do have a percussion 12 bore that patterns better with a cushion wad but I glue the hard card to the cushion and then lube the cushion section.