My current WoW folder is under 8.5 gigs. You can delete the old patch info and it won't hurt a thing. I don't know what else you have in there, but your WoW folder is bloated way past what it needs to be. You could easily put current WoW plus expansions onto the HDD of the 360 and PS3. It would eat up a lot of their space, but it could be done. You could also just put the game on a dual-layer DVD and play it off of that, but it would get screwed every patch. My guildmate did that for a while.

Edit: I just checked and found my screen shot folder takes up a lot more space than I thought. The entire game is under 8gigs. This is with the expansion and all patches installed.

You can, absolutely. And if you want to play again, be prepared to spend several hours:

1) Installing the game
2) Downloading and then installing gigabytes worth of patches

I have a ton of custom content.

Back when Vivendi was trying to unload it, they wanted a cool billion for the entire business (Sierra, Blizzard et al)--they weren't intereted in selling it piece by piece, and certainly not in selling the crown jewel alone. This was also, of course, before WoW turned into an absolute world-devouring monster, and nobody thought the asking price was reasonable (hindsight being what it is, though...ouch).

 You could replace every armorset and model in the game twice over and still take up less space than what you have. I cannot begin to imagine a way to actually use up all that space in a useful way. Mods don't take up that much space. The only way it seems like you could even get that large a file is to keep all the only patch files in the folder.

HDD certainly is a problem. However the 2 biggest problems are that you NEED to use a keyboard+mouse for the game to even be playable, and the fact that Blizzard would have to pay to Console Manufacturers from the money they get from their WoW subscriptions.

- The PS3 is the only console that is Mouse+Keyboard compatible, but since M+K are not standard, World Warcraft would only be accessible to a very small fraction of the PS3 users (which is already small as it is)... and even out of those that do have K+M, how many would be interested in the game AND use internet?

- The largest problem is: profit. Activision Blizzard would be forced to pay like 30% of their revenue to console manufacturers (I'm speculating on the 30%). Add the porting costs and you have probably little profit.