Ahh yes, "a change". It's never an upgrade, it's always a change. A change is genres perhaps is what you speak of; from survival horror to blueprint for generic shooters everywhere this gen? Yep that certainly fits pretty well.
Seriously RE needed a change. The controls never improved,the camera was against you,and the puzzles were obtuse and nonsensical,they made some sense in 1,but they made no fucking sense in 2 and 3.
Say what you want about what they did about the characters and story,removing zombies,but 4 was a change for the best.
Unfortunately RE didn't need this change, it's just needed an upgrade & 3.5 was the right direction but they must've caught the "wider audience" bug so they went full retard & thought it was a smart idea to make a shooting gallery out of a horror series =\ That is my main problem with 4 & 5, yet morons always seem to think "bawww I want it to stay the exact same like Dragon Quest for 20 years". There's a huge difference between keeping it the exact same forever, adding upgrades & pleasing your old fans as well as adding new ones, & giving the finger to old fans because you prefer braindead idiots who'll buy your shoddy product.
As for controls & camera, they were fine. You'd have to be an idiot to NOT get that up=forward, down=backward etc. & yes, they did improve them with each sequel but you probably didn't notice that because you started with 5 probably =\ I'll give you the very first RE on PS1 but by the time the Saturn port & later Dualshock version were released as well as RE 2, the movement became tighter. RE 3 added backspins & further refined movement, not to mention quick dodge. I was baiting enemies left & right by the release of REmake & RE Zero for Gamecube. Might be a shock to you but all that was changed control/camera wise with 4 was the OTS camera for aiming (& those disgusting QTEs). Which was a nice addition as well as the new item slot system. Unfortunately they got the idea of making enemies shit out ammo & health items even on professional, last time I checked RE was supposed to be survival horror & they completely forgot it with 5. Ignore those drops you say? Doesn't change the fact they were still dropping left & right.
We can blame Capcom for making it a-okay to dumb down your long-running franchises into casual trash no matter what genre they used to be; Rainbow Six, Splinter Cell, X-Com, Hitman, Elder Scrolls, so many more series utterly raped in this gen. You're gonna make something that feels like a completely different IP, at least make it an actually new IP so the old series can die with it's dignity intact.