The Resident Evil series hasn't been the same ever since those two left Capcom because Capcom won't honor there wishes. If you don't know who those two are, they are the ones who created Resident Evil franchise and made Resident Evil 1, 2, 3, and 4. Ever since those two left Capcom and Hiroyuki Kobayashi took over the series, the Resident Evil series has been absolute crap ever since.
It wont ever go back to the old formula unless they remake the original games. Even then they would increase ammo and make it so you can eliminate all the foes. Honestly most players want to be able to face the Zombies down rather than run like a ##### the entire game. The grenade launcher glitch was on purpose for a reason in REmake.
it's too bad that they left I loved RE4 so much that I beat the game multiple times, I liked RE5 but not as much as RE4 now RE6 IMO is not fun I get bored fairly quickly, I wish they could come back to revive the RE series but unfortunately that will never happen