I will happily skip this DLC and i skip ALL dlc that doesn't impact the game, i even skipped the stupid explorers pack thing - i can download mapscripts.
This should have been in the G+K base game, and some crappy, badly designed map + a few "non civ's" (civ's that exist ONLY in the scenario), this will NOT be motivating. It won't be "free" like stone - so it will probably be a DLC bundle, and i hope i am wrong because im not going to just give money because they made a "mod".
The other reason i want this to be wrong is because i already predicted the next DLC as Zulu - and i demand to be correct! So far the only prediction i was wrong about is Celts - I predicted they would follow Zulu 2 DLC down the road.
Personally, im wondering if there will be a Civ 5: Colonization - if so... ill be playing that once 2071 and medieval is "ported" over.