I wouldn't compare DR3 to RE6, not even close. That would be DR4, where all these criticism and more can be applied to since there pretty much is no Dead Rising there by that point.
I'll fight you on this. Hell no is DR4 even close to RE6 while yes they both become the logical extreme of the bad trends both series. Re6 still hold up as a good if flawed game dead rising 4 doesn't hold up even if you file off the name and call it. Something else. This is why I feel Re6 and DR3 share more in common.
There is no formula that sets in stone what a Dead Rising game MUST be, but I think people get too anal about that. They want the same thing, everytime, and cry when devs try to change things up, that's how you get yearly franchise like Pokemon or Call of Duty and how they inevitably de-evolve without change.
With pokemon It's not the lack of change. It's the lack of care by the dev team. Pokemon has changed a lot in the mainline games, and does experiment, but it's very clear by the lack of polish that the devs don't care enough to fully commit to any one new idea.
This is how you get a soulless demake like DRR btw, it looks the same as the thing you love and has all the elements of a "proper" DR game, but at the same time it's censored to shit, casualized to hell and has yellow paint everywhere, does that make it better than DR3 and DR4 automatically because it has all the tropes you're looking for?
No you get a soulless Demake not by wanting the same. You get it by greedy corporate higher ups, and virtue signaling devs who think updating a game for modern audiences is the same thing as jingling keys in front of babies loaded with money.
By the virtue of the changes it also messes with the tropes of the first game in a negative way. And I don't just mean because they casualized it. They literally changing characters, and mechanics. This has the knock on effect of making it worse, not only because it now a inferior version of 1( like chop till you drop), but because it also insults the fanbase.
There is more to a DR game then just the pure Tropes. It's how everything comes together and gels. That is what makes DR1 so special is how it hits all the marks. This is why 2 takes such a drastic turn, because just rehashing one would just make a worse version of it then even come close to how good the first really is.
I agree with you that the series should change, but There is one thing that should never truly change. DR at it's heart is the player confined to a space with a timelimit to mimic how the world is ever revolving thing, and some zombies. The Game doesn't care if we choose to follow the story, or go fuck around killing those zombies. It says Treat this like a sandbox, and look at all the cool shit we packed in this playable area to find, or just go from point A to B.
3 timelimit might be a bit too lenient for me, it still does have one and follows the Core of DR.
4 loses this heart by removing the timelimit all together.
The Rest of the ingreidents are up to the devs to figure out, and combined.