Talk:Jayce/@comment-13660209-20140917012432/@comment-14347199-20140920002802

I personally think it would be too weak. Lategame, I tend to use Thundering Blow as a finishing hit instead of simple disengage (unless I'm peeling for one of the other carries), and it synergizes incredibly well with his combo. Cannon form Q + E to poke the enemy down, and when they're low enough, Q + E, then R through the acceleration gate for a huge speed boost, W  then Q onto the enemy, AA, and E.

If Thundering Blow was moved to Cannon form, you'd have to use Hammer form to gapclose without any form of speed buff. The acceleration gate lasts for 4 seconds, and Jayce's R is on a 3.6 CD at max CDR, meaning that you'd have to telegraph your plan by laying out a gate (and maybe popping a cannon Q) before immediately switching to hammer, idling for 3 seconds before running through, keeping track of your CDs the entire time, before hammer Qing, AAing and then... pressing R just so you can press W.

Onto why I think Thundering Blow is better used for damage instead of peel: 20% max health (+100% AD) is incredible damage, even moreso when it's magical damage on an otherwise physical character. Most squishy champions in league have over 2000 health at level 18 when fully built, so Thundering Blow can do upwards of 400 damage. Considering I tend to build 300 AD or more, a 700 damage nuke (550-ish after resistances) is incredibly vital for finishing off low-health targets.

Plus, keep in mind that cannon form E is one of the best self-peels in the game, and you can always switch forms for both extra movespeed and hammer form's aforementioned E.

TL;DR no, it would make him weaker.