2 things about about that Ninja:
If you played the game on a normal/harder difficulty, you didn't have the ammunition to kill those slow plodding zombies.
I'm telling you as an accomplished writer, there is NO Logical Evolution when it comes to fiction. That's part of why it can be fiction. In my mind, something like the Crimson Heads from REmake would have sufficed just as well, and felt far more deadly and outright dangerous that Ganados and Majini. When it comes to fear, people are afraid of seeing things that act on instinct, and are afraid of things they can't see when they show intelligence. In most cases, when you flop the two, you don't get those horrific detail in the results.
If you want to talk about marketing zombies, that's fine. You really don't need too, becouse there's so many zombie games/ movies, ect out there. But the other creatures during the early RE saga were well designed and well purposed (that's my personal belief). They suited the task at hand.
This is what I would like to see:
Zombies, and eventually the whole crimson head evolution brought back.
Less ammunition, if I wanted to shoot instead of think, I'd play one of those God-aweful Call of Duty games.
Being back the original, dank, dark atmosphere. Fear of the light has thus far preformed pathetically.
Put the whole orginized bioterrorism act and evil corperation in the background of the story, let the narrative foreground be about survival. If you do survival right, the suspence and action will come naturally.
Either go back to a character that we haven't seen since the Resident evil dark ages or create a new protagonist. Chris, Jill, Leon and Wesker have been abused quiet enough. We know those characters (A possible Suggestion: Barry, Rebecca, or better yet, create a new character that isn't STARS, isn't Military, Someone so vulnerable the best they can do is survive).
With the new DLC out (haven't played it for myself yet, but have watched a couple of friends playthrough), I think they were a little more in touch with survival horror, but there was nothing terribly innovative about that, an with Horror, you have to be inovative, becouse people eventually become numb to the same thing over and over (and often times much faster than any other genre of work, like Romance or Tragedy). It's why the Aliens saga has suffered, as well as many others.
I'm not saying RE was the worst game in existance, or even a bad one, but I think they could have made it a better spin off series than calling it a crucial piece of the central story arc (like Gun Survivor or Outbreak, only I imagine it would have been more successful than both combined). It was fun for me, but it's not on par with the previous titles. Again, I'm probably a little jaded on the issue becouse of the writing thing and blah blah blah, but the my friends that were playing these games with me back in the 1990's all have the same thing to say.
One last thing, just now realizing this. the Whole RE5 versus the earlier games is one of those "Back in the good old day" arguments. The older generation that were playing these games early one versus a new breed of gamer that likes the idea of shooting and bombing. I can't imagine you can have both praising the same title this far down the road. Capcom's got to make someone happy, and I understand that completely, I suppose the you youngin's won out this time.