Like others, I prefer the old artwork, however its apparently not in the cards to revert back to the old look due to licensing.
The game still plays as great as ever. I bought this when it first came out on iOS and it has a permanent spot on my main home screen. Its a perfect phone game: good for a quick 5 minute scrimmage against the CPU or a longer PBEM-style match. Constant updates with new armies has kept this game fresh.
Highly recommended.
DemonCore about Neuroshima Hex