Pantheon
I feel like people are forgetting one major thing: his block is no longer passive. It's only on an active skill. His passive is replaced by a similar passive that empowers abilities instead. He can block all damage from one direction for a while, but when that skill's on CD... that's it. He's not going to be blocking anything else.
Something else of note is that his E is weaker, offensively. Prework Pantheon does 33.33 / 50 / 66.67 / 83.33 / 100 (+100%bAD) damage per strike for a total of 100 / 150 / 200 / 250 / 300 (+ 300%bAD) damage, but reworked Pantheon's E is going to deal 100%tAD + 55 / 105 / 155 / 205 / 255 (+150%bAD) instead. Even if empowered, the 100%tAD ratio is converted to 166.66~%tAD and the last hit's damage is unchanged. He has less damage, less capacity to be a lane-bully, and... most importantly, less incentive to max E first. Laning against him will be easier, and his waveclear will be worse.
Due to the nature of the change to his Q, which had the AD ratio nerfed (it went from 140%bAD on prework Pantheon, to 100%bAD on rework Pantheon w/ the base damage unchanged) he won't be a lane-bully with unavoidable damage anymore. In fact, I don't think he'll classify as a lane bully at all, post-rework. Mortal Will's Q may need to be nerfed, but it's also now a skill-shot that's on a minimum CD of 46s, and is still about as strong as old Pantheon lobbing 235 + 140%bAD spears at you every 4s.
Oh, and something else to note: his E has a mana cost of 80. His mana pool? At Lv6, 439. He isn't going to be spamming it, and without mana he'll be a worse version of Garen that loses every trade to everyone because his base AD (61) and growth (3.3) is absolute garbage, Oh, and he only gains 55 (57?) health a level, so you can expect to dumpster him with just your autos if he runs out of mana. It almost gives me some hope for Riot that they're bringing resource management back into play.
EDIT: I just ripped this from a comment and posted it on it's own, because it may be helpful to those who worry about him being absolutely broken. To me, they look like closet nerfs to his capacity as a lane bully, and closet buffs to his capacity as an actual champion you play throughout the match.
