Here's another comment I had thinking about this topic:
My main account has 7 full toons, here is the brief summary:
Mystic Mage Weaver - approx. 800-810 points with jewels and artifacts
Mystic Bard - approx. 840 points with jewels and artifacts
Sampire - approx. 760 points with jewels and artifacts
Wraith Paladin Archer - Approx. 780 points with jewels and artifacts
Stealth Archer - Approx. 760 points with jewels and artifacts
Mage Tamer - Approx. 790 points with jewels and artifacts
Paladin Macer - Approx. 800 points with jewels and artifacts (also - my least used toon)
If we boosted to 1000+ natural skill cap, half those toons would be obsolete. I would be able to just throw stealth and hiding on my wraith archer and would have no need for the separate toon. I could throw some extra dexxer skills on my sampire and completely forget about my pally. I could probably add some bard skills to my Mystic Mage Weaver and forget about the other bard, or maybe add necro and SS and just have a completely dominant all around spell caster. And that's before considering that I could add jewels for even more skill points.
It would take the fun out of having to create specifically crafted templates and everyone's templates would begin to blend in and look the same even more than they do now. It would give players too much power to be able to solo various aspects of the game and further take away from having a community multi-player component. Just about everyone would have a reasonable shot of creating a toon that could solo the Roof. Sure, based on the example above, it would free up a few character slots for me to maybe make a T-Mapper or Crafter, but I have a second account for that.