I don't begrudge anyone's design parameters. The whole point of this forum (I thought) was as a refuge for the guys that didn't like being constrained (and looked down upon) by the MTGS "power max" crowd for doing things differently.
And then I come here and get the same kind of elitist attitude because my constraints don't jive with the prevailing Riptide contingent. Um…. that's some high powered hypocrisy at work there.
I don't doubt that you open up a lot of things with double fetches. I've read the articles, I've seen the benefits. I'd run more if I could bring myself to trade $800 away for 10 cards. But I do NOT believe that double fetches is the only way to create an interesting, fun and dynamic cube environment. Again, you are making the EXACT SAME argument the MTGS crowd is making when they say people are lame for not running Kalonian Hyrda or TNN (because to them power equals fun). Your cube Jason works more like a constructed environment from what I can tell. You have built out solid support for decks that plays less like limited that typical cubes. Presumably, that is your goal. That's cool, I'm sure its awesome actually (and I've stolen ideas from you in fact), but it's ultimately not where I want my cube.
Aside from not wanting to push a constructed centric cube, I simply can't buy an endless stream of $200 cards from a practical standpoint. While I can probably trade for a good number of them, I do not possess an infinite supply of tradable Magic cards. So it has to figure into what I do. You know another constraint I have? Artwork that doesn't suck. If there is an amazing card and the art is godawful, I won't run it. Because part of the cube for me is aesthetics. And you know why I'm OK with these design parameters even though they add artificial limits? Because there are 2.5 million ways to build a really fun cube that people will enjoy playing. And so I can add all the constraints I want and still have a gazillion design options.