I'm not entirely sure Resident Evil will be like that come the main game. I mean, it's nice for the demo but like PT and it's demo, the game that was to be released was a traditionally 3rd person game. Resident Evil 7 may be a traditional 3rd person game but the demo is more of a setup / advert for the game, right?
This said, changing the gameplay from a series may hurt it. After all, isn't that what is expected from a certain series? Fans of Gears like the over the top meat heads shooting (and chainsawing) the crap out of locusts, it's what the series is known for, the new one is much the same just the protagonists have gone on a diet. God Of War I think will be much the same, just with a new perspective allowing for a different perspective yet will hold it's roots when the combat get's hectic.
Yet these games are series with the same characters and problems, so a certain gameplay style is expected. Take Final Fantasy as an example and it's moving to the 'too far' area of things, each iteration is meant to have similar gameplay, themes and similarly named concepts but the universe and worlds they are set in different. Yet the last few they have tried to reinvent this concept and each iteration has been met with differing reactions instead of outright praise from the PS1 and early PS2 eras. SquEnix seem to be in the mind that the series need reinventing as a concept, and this is where I think they are going wrong. The concept was fine, just reinvent the stories as usual. Basically moving too far from what made it popular.
Hmm, pie.
