RE1 and RE2... And you don't like storyline tie-ins?
If you take the stairs for both campaigns, then that means you failed the requirements in both campaigns and you don't deserve the elevator.
Correct me if I'm wrong but you are showing hostility towards me because you think I don't like the game. I'm sorry but I haven't played the game, I was discussing Giantbomb's reviewer's comments. I won't be buying this game after hearing how terrible it is and if I were to buy it, it will be $20 in a month.
To answer your question. The problem isn't any tie in (btw I never had a PS1 or played the original). The problem, as described, is that you have to do it multiple times and there is no variation in the way it works.
As for your comment that you don't "deserve" to take the elevator, wow...that's all I can say. I'm sorry that you don't think the game should be consistent across campaigns. Why even have the characters in the same place?