This change creates and solves issues for me in so many different ways I can't really say it's beneficial for me or not...
On the one hand, faster sets means revisiting worlds I like more often than once every jillion years. I'm still waiting for the New Phyrexia vs. Eldrazi vs. Slivers set that somehow leads to all slivers getting annihilator and can be cast with phyrexian mana... Also, finding out what happens to Elspeth after the Theros block (because something will happen to her for sure) would be nice. Having a faster rotating standard would also get rid of things like Sphinx's, Thoughtseize, and Pack Rat faster, which would open the door for some more interesting strategies (for me).
On the other hand, buying boxes to have many standard staples and buying cards for fringe/temporarily interesting decks is pretty much out. It's nice to have 4x of every potentially useful rare if you're buying them for 24 months of use, but my local game store does not run standards often enough to justify buying as much as I have for 18 months of use. I guess this is great for my checkbook, but it's not as much fun as trying a new deck every time standard does roll around. I'll definitely have to be more picky when it comes to picking out a deck. On the bright side, I'm not stuck with that deck too long anyway (since some of it will inevitably be invalidated in a short time anyway), so that'll keep things reasonably fresh. And if there aren't any decks in a standard iteration that strike my fancy (weird, drawn-out combo, wherefore art thou?), I can just wait until the block rotates. This might mean playing less (if there aren't any standards at my lgs for a whole block, or if there aren't any strategies I like available), but I'll definitely save more (and have more money to devote to modern).
On a potential third hand, not having core sets will be awesomely horribly terriblawsome? Random reprints with plane/setting/character names (like Urborg, Phyrexian Revoker, etc.) won't happen in standard, which might suck for modern card prices if there aren't enough supplemental products with those cards. A super generic draft set won't be around either, and those can be fun sometimes (simple mechanics can be amusing every now and then...). Getting a mound of reprint x will be nice to avoid, and having a higher chance of fetches (and other beginner-unfriendly rares) getting a reprint will also be nice.
And, heck, Tarmogoyf wasn't ultra-oppressive in standard back in the day, so maybe he'll get a reprint in the new standard. He'd have even less of a chance of ruining the meta if he's not in standard longer than 18 months. I can dream, right?