but the serialisation of everything is already so tiring

Frankly, that sounds like a you problem. Good storytelling is not at all tiring to me. You find complex stories to be challenging and exhausting, for some reason. I'm not making any specific judgments on that point. It just is what it is.

For the rest of us, the obsolete traditional movie medium is just too simplistic. Even Oppenheimer is a perfect example. The actual story of the Manhattan Project is FAR too complex and complicated to tell in a single sitting, to the point that I don't even have any interest in seeing some ludicrously compressed, dumbed-down film version of it. No matter how hard they tried to make it good, it'll inevitably just boil down to "hat man make big bomb."

I'm just not interested in that.

It would undeniably be better as a series. As would everything worth making, which was my original premise.