If they do release upscaled versions of the old models, it’s just going to be “Primaris, but wearing parts of old armor mk’s”. They may even add special and heavy weapons to intercessor squads, but it still won’t be Old Marines. Because Old Marines isn’t about the fluff, Old Marines is about the molds. Always was.
You have this completely backwards. Old marines are only the fluff. People have been truescaling the OG boys since forever. If Primaris didn't have such dumb lore the community wouldn't have fractured as bad as it did. Give me new sculpts with modern scaling for my old boys and I won't have to buy Primaris to convert them into 2 wound firstborn myself.
Nope, they’re just Marines. And if the new models came out at Primaris size but with the different marks of armor you would buy it. The fluff of what a model is doesn’t matter on the table, just how it looks and how it performs.
I don't understand this mentality. All of my marines are Black Templar because I love their fluff. Everything about the attitude and history of that chapter speaks to me, and so I paint them black and spend the extra time adding loincloths and tabards. Then, because they are Black Templars, I play them as such. I don't use White Scars rules because they're stronger, or Blood Angels, or Space Wolves, and just have them visually be Black Templars.
This carries over to model types as well. I don't play Primaris marines because I dislike their fluff. I don't like how they entered the setting or how they are used by the devs, so I don't buy them, paint them, or add them to my Templars. Thus, their rules all through 8th were trumped by their lore, and I never touched them.
Now that SM are all 2 wounds a piece, I might go buy some intercessor packs and painstakingly convert them into not being intercessors so that my Firstborn or truescale, and if a new kit was released that was Primaris marines in MK III armor I WOULD buy it in a heart beat, but I'd never use them as Primaris, and if they had Primaris identifiers on them I'd file those off and use them as Firstborn. It doesn't matter if using them as Primaris would give them +1 save and +2 attacks, if their fluff is dumb I won't use them as such. That's what I meant by the fluff being the only thing that matters. The portion of the player base that I belong to won't buy something, or build an army, just because the rules are strong. If something looks good on the table we will make it into something fluff wise we approve of, and if that can't be done I myself won't buy or use it.
So nah. Old Marines is and always has been about the fluff. If Primaris were just upscaled marines with no bad story baggage I'd have bought a bunch already. It's their fluff that made them so poisonous. Even the people that hate their armor design likely could have found a suitable way to model them out to taste if it hadn't been for that.
All of this having been said, I'm glad that the old and new lines are being moved toward a similar stat line. If GW were to eventually phase out the Primaris part and start having them all function as Just Marines, then people like me could convert away and use whatever stats we wanted without feeling it was poisoned by that bad fluff, and that seems to be what is happening now. This process would be a lot easier if all the new models didn't have such goofy names though. Nobody is ever going to believe an old marine was part of an Intercessor squad.