It would be okay on melees and broken on ranged champions. And it would do nothing for skill expression at all. It would just make certain ranged champions way more overbearing.
Before anybody rags on me for saying ranged champions would be stronger with this, this is simply a matter of increased returns on area when radius increases. A champion with 550 range has 950,332 square units where they can attack. If you increase that by 25 range, they now have 1,038,689 square units of range. Whereas in comparison, a melee with 125 range has 49,087 square units where they can attack, and increasing that to 150 gives them 70,686 square units of range. While speaking in terms of % increase in range the melee has far more, the standard ranged champion has an increase in range that is great than the melee champions total new range.
Hence this is a terrible idea. I always thought rapidfire cannon was a bad idea as well, but it was okay because it was a one off shot. In this scenario a nonstop increase in range would just be outright broken. It would reduce intended weaknesses of champions like
or
and augment the terror of champions like
