I think that Aegeri and I are in a similar boat: we'd like to give our money to WotC if only they would do a minimal amount of work to get it...
Seriously, every adventure ever published in Dungeon has had maps. Until very recently (the advent of tiles) almost every one of those maps was good or better...
I, too, would really like to be a subscriber to Dungeon again. I've been a subscriber for most of the magazine's existence. But they've got provide me with something that sparks my interest. For better or for worse, good maps are often among the main hooks that draw me into an adventure. And when I see nothing Dungeon Tile maps, my eyes tend to glaze over.
On the one hand, I am somewhat encouraged by the descriptions of this adventure and of White Fields. If WOTC continues to produce interesting-sounding DDI adventures on a monthly basis, I might re-up in a couple months to see if it's worth the money again.
On the other hand, Dungeon Tile maps which I could throw together myself in Photoshop in 5 minutes aren't likely to help their case.