There WILL Be Problems With Any Game in Which Constant Change is a Main Draw
Its one of the reasons i come back, what got changed? whos strong? whos weak? new item? Buffed Item? nerfed item?
But with this and the 2 week patch rotation(whether patching is needed or not) there will be balance problems. Its going to happen. But this goes both ways.
Yes there will be things that are too strong, and too weak, but the duration of this is usually very slim, and is the reason why when asking myself: "does it really make sense to have a game that is balanced over 20 times a year? Can any game with that many needed changes even be good?" the answer is yes. It keeps it fresh, it creates new things. It lays the ground for a decade long run. Its the way a game like this should be.
So kudos to the riot balance team, i know it can get shitty over there.