User blog comment:RoznosicielCiast/My second attempt at balancing (hopefully better this time) + skin ideas/@comment-7709681-20140811042844/@comment-6061249-20140811053724

Well, my first attempt included such changes as 1 health less per level. That was a huge failure.

Some of the changes might seem slight, but it just depends from the way you think about it. While some of them really are slight ( or for example), there are also bigger tweaks -  gets a massive buff to upgraded grenade, for cost of noticably affected two other upgraded abilities,  gets 10% more cooldown reduction in  for almost free. Some mana, 20% CDR and ability upgrade just for 1000 gold, and several more changes are definitely a thing.

It just depends on what is needed - it's simple that a huge nerf wouldn't be right if the goal was to reduce a champion's win rate by 2.5% or so.

Also i'm rather avoiding changing mechanics since it might completely destroy the whole kit or create a massive synergy with anything else. Changing mechanics is something i would do only if champion's kit is very toxic (honestly i can't find any example ATM), outdated or not possible to balance just by changing numbers.