That'll be a disaster for the franchise.
Sort of like taking a Corvette and putting a 4 cylinder 100 hp motor in it and promoting it as an economy Corvette. Vette fans would be like WTF and it'd be hailed as a huge misstep.
PVE is what made GTA. To fundamentally piss that away in favor of this terrible cash card model with trite and often shallow content that's just designed to moved those cash cards, will turn off substantial portions of the playerbase.
If they do that, I won't be buying GTA VI. The question is with all the money R* and Take Two is bringing in, why can't they do both? A billion bucks after profits it taken ought to fund a nice development team providing BOTH PVE and PVP content no? Sadly, right now they are coasting. Throw a few expensive cars, a recycled game mechanics with different garages and vehicles some clothes and a gun or two.. and that's it. GTA:O hasn't been AAA for a long time.
This is what I feared with the cash card model. People want things, they buy cash cards. No incentive for the dev to really continue to create AAA quality DLCs. Just feed the economic system is all the franchise lives for now.
I think we have to accept that GTA VI is not coming out and the future of GTA is online.
I hope that really happens. They just update the engine, expand the map, but let us keep our stuff.