Most people happy with it are not going to complain about it. You only hear complaints from those that aren't - 2 or 3 people (so far) aren't really making me lose any sleep. Nevertheless, for the original game, I will make it easier. But it was never meant to be so absurdly easy, like it was originally. It's not supposed to be easy to gain the best rank.
I have a feeling that even after tweaking it to be easier, people will still be expecting the bug ridden original, and I'll then ignore the complaints entirely.
This is what I am going to do:
First try: Same difficulty. No change.
Second try: 3x easier (easy)
Third try: Very easy.
For Weapon, it will be unchanged up to and including the third attempt.
In both games, getting the best rank will require near perfect timing. There will still be people complaining that they can't get the best rank, but no-one is forcing them to reset the game to do it.