Further, I also proposed that you should just ban culprits like Yawgmoth's Bargain and Tolarian Academy instead of having a too-long Restricted list (see "Is Type I Broken?, Part III"), and they did just that for the "new" I.5. You can actually try to break Crop Rotation with Gaea's Cradle again, for example. You even have a lot of powerful but now unrestricted cards like Fork and Regrowth to toy with. Of course, I think they can take Frantic Search off the list now.
This should be the main reason for playing new 1.5 for all those players, either the casual or the competitive, that love the creative aspect of the game. There is a big pile of magic cards that are just too much fun NOT to play with, but just fall at the hands of those relentless vintage criteria (Is the card blue or artifact? Is it below 2 mana or otherwise heavily undercosted? etc.)
Now those cards like Hypnotic Specter, Vindicate, Armageddon, Yavimaya Elder, Fork, Aluren, (seemingly endless list here...) might be playable again and YOU are gone be the one to build the 'new' deck that wins a type 1.5 tournament. Type 1.5 will - because of it's slightly slower pace - be the format with the biggest pile of playable cards and I think this will result in a more varied metagame than any other format, even Vintage.
In a format with a wide variety of playable decks, people will be in great danger of being surprised at a tourney, even when - in a couple of years - the metagame will be more settled, like vintage is nowadays. And I don't mean the kind of surprise like "Wow, this TPS deck has 2 Tendrils instead of 1". A higher rate of good, playable cards will extend the replacability of any card in a deck. Replacability will guarantee a very dynamic format, which could change with every new set, though probably not too much (as in standard).
Personally I am all up for some nice, fun, interesting, flatfaced surprises and am looking forward to the day someone in my neighbourhood dares to organize a type 1.5 tourney.
