If it wasn't so expensive, I would love to see an online version for 2.0. (Excluding phones) I think playing online,across multiple platforms, would be ideal for attracting new players.
Picture the ability to zoom out and view the arena overhead style like normal, but when its time to action your creatures you could change the POV and zoom down into the zone you're in.
OCTGN is great, but imagine what we / they / us could do if we had a dedicated team of developers
Going online would also take care of all the little annoying aspects of the game. Upkeep, Channeling, Packing / Unpacking. A tutorial could be added to help new players learn incrementally instead of the typical "Here's a book, godspeed".
MOST importantly we could finally add a campaign / solo mode where you could start as an Academy Mage and work your way towards becoming a full fledged Arena Mage!
Wishful thinking I know, but at this point its all we have anyways