I agree with the comments saying that we must wait a while before we assess these changes completely. However, I think it's evident that crit is completely overpowering the game. It is basically winning most games and due to the rise in AP items and the removal of the mana pot, the game is basically being run by AD crit champions (ADCs, Yasuo, Trynd, etc). AP Champions who usually serve as primary waveclear can no longer be as effective, and this makes them much inferior. Furthermore, the increase in crit stats for these items is making champions stronger after their first and second buy, which then allows them to gain a considerable lead. Due to the new changes, the team with a lead gains numerous advantages, and I think this overall is making games much quicker. Since AP champions are weaker, they can't waveclear as effectively and stall games, so it basically grants a win to the team with stronger champions early-mid game. Champions with bad early games are basically useless unless they have an early power spike.