And to answer the questions, we stay off site now, and adding a resort fee on top of the cost of the room would definitely keep us away.
Last week, we stayed over Thursday night, after DS's school trip to Epcot. If we had stayed at a value, it would have been $130 that night. Instead, I paid $98.xx for a larger room, bigger beds, more pools and way less busy off site hotel. Yes, I paid $20 in parking at Epcot, but I would have had to pay that anyways, as we wouldn't have had the time to go to the value resort to get a parking pass before meeting the buses at Epcot, to avoid the parking fee (got tickets that day, so no Magic Bands or linking for FP+).
We are planning a family trip in October this year; with 6 adults, 1 teenager and 2 infants, we're looking at renting a house. Much easier to deal with, as we will have 2 cars (my girls are splitting the cost of a rental, and sharing it; as they are both flying from west half of the country) and I don't mind cooking for everyone, or staying at the house with the babies so the kids can have some adult time. (Yes, that's my plan, mwahahahaha, grandma time!!!!!)