Unpopular opinion alert but I think people need to stop complaining about this really. BE is a free in game currency and with little actual use. If you wanna get a champion, then play the game and save up to allow youorself to do so. It's not hard really. Every game they give you BE, albeit a small amount, but BE nonetheless. Not only that but since removing the level cap and giving implemementing rewards for levelling in the form of capsules that can give you multiple champs at a time at a discounted BE-price, I don't see why people have the grounds on which to complain? I just had 70K BE, idk if that's just me and I doubt it is, but all I'm saying is it isn't hard to get these. Even if the prices don't change with regard to their age and or play rate I wouldn't complain.
Imma buy Aphelios on release and for champs that I think I'll enjoy in the future with 0 problems.
I would be kinda annoyed if I saw this as an employee at Riot because not long ago I saw a post complaining that they have nothing to do with their BE. A quick side-point but wouldn't attatching prices to the play rate of champions make a clear indication as to which champs are in meta and which ones aren't? Something about that just doesn't seem right.