They already have complete season sets for DBZ.
The seasons are broken down into smaller chunks of specific plot points in each arc. If they were to be condensed into even larger arc-sized sets as is being proposed for OP, they would probably consist of Raditz through the end of Namek, Garlic Jr. to the end of the Cell Games, and Saiyaman to the end of the series. Even if you'd split the Saiyan saga from Freeza proper, you'd still be left with Cell and Buu as being clearly connected arcs worthy of collections.
So, that'd be about 100 eps per set give or take, and about 16 disks each give or take. OP's season 2 is 14 disks, so that's close to what would be expected of DBZ before anything else. If even that is too unwieldy for Funi to expect of DBZ, the money-making machine, to currently handle, it's too much for them to expect of OP.