Stopwatch as an Inspiration keystone

Considering Stopwatch's power and frequent use, wouldn´t it be better off as a keystone instead of a normal rune?

Mainly due to the fact that it can warp matchups and entire games, almost as much as Spellbook and Kleptomancy do in some cases.

It could be Inspiration's fourth Keystone. Or even be swapped places with Glacial Augment. Numbers-wise, both wouldn´t change, just their place in the tree and consequentially, their importance.

If people want Stopwatch, they´ll have to forgo other keystones in favor of it.

As a unrelated note: Nerfing Klepto's loot chance doesn´t solve its problem. People will still be able to be graced by the powers of RNGesus and get more than one gold bag with 110 gold in it. Putting Klepto's RNG under control by limiting what kinds of items can be looted and their effectiveness, like preventing the aforementioned graced by RNGesus issue, will go a long way towards making it a healthy rune.