I doubt it very much. The production of one episode takes six months. That is, it will take 2 years to get a full season. Release dates are now the main issue causing the greatest skepticism. The only thing that can speed up the release or at least keep the release in the mode of 2 episodes per year is that he will no longer need to spend time creating a new environment. All important locations have been created. We had a freeroam in the mansion of diks, hots, preps. In the new update, the locations of the sports center will be presented. We haven't been except to the jocks.
If the game is still good after 19 episodes, no one will complain about getting more. If DPC pulls another blood bath, even 10 episodes will be too many. The length of the game on its own isn't the important part.
I do worry about DPC's ability to spin this story beyond Season 4, but there are ways he could do it depending on what happens next. If Episode 8 lives up to its title we should have a better idea of the scope of the story soon.
I'm just out here thinking why the fuck Quinn isn't an Li... I know she's an acquired taste and not everyone's cup of tea, I myself wouldn't say she's in my top 5 but there should definitely be a Quinn ending when the game is set and done.
Also Zoey.. she should be an Li as well, she's MCs first girlfriend and circumstances forced them to break up. when she and him does reunite, she shouldn't be just another fuck Buddy. this game is far from finish tho so alot can still happen it's all up to DPC in the end. The 5 main LIs as they are now don't necessarily have to be the only LIs going forward.
I still think the key difference is that Quinn is optional. You can choose to get involved with her if you want (and meet her criteria), but unlike the actual LIs you can also just skip her personal problems and interact with her only as an antagonist.
You're right that in theory DPC could always add more LIs later, but I doubt he will do so. If the current 5 LIs were added as the MC uncovered their paths, it would make sense to keep adding new ones. But the LIs were presented all at once at the end of Episode 1, even though Bella had shown no interest in the MC and Jill was barely in the game. Even Maya's status had just been thrown up in the air thanks to cliffhanger.
For whatever reason, those 5 were singled out for the end of episode status report. To me, that suggests there's more to the LIs than the other girls the MC fool around with repeatedly. It might be as simple as them being the only ones with proper endings, but I think it goes beyond that.
Either way, though, I don't think it really matters if Quinn is ever made a formal LI. Her importance to the story is obvious, she has her own version of all the LI activities, and it's not like being a formal LI in a DPC guarantees the girl a happy ending.
As far as Zoey is concerned, right now she has no connection to current events at all. I'll wait to see how (and if) she's reintroduced before I judge her romance status.
EDIT:
Lest the actual answer get drowned out in a sea of unhelpful snark, it will be released on Friday.