Delicate used a full tub of water to buffer the wash action which, even on gentle, would be too harsh with that high fin Gyrator moving in a partial tub of water. Besides, it was also meant for blankets, even if it did not give the proper high speed spin to extract water out of woolens; for that you had to select the spin button after the cycle was done. Other TOL washers featured a programmed cycle or settings that allowed the user to select slow agitation with high speed spin.
RE: the water level adjustment. Upper model Maytags were long pointed out as being deficient for not having a more variable water level when CU tested them.
Rinse only was a cold rinse, drain and spin so it did not have to be coupled with anything to automatically finish the cycle. It could be used manually for a second rinse, but there was no way of automatically giving a second rinse. The Wash 'n Wear cycle's cooldown was a close as the machine got to extra rinsing. Incidentally, at this model's time, it was the only Maytag with a cycle that featured a wash 'n wear cool down.