I have following feature requests for both PVP and PVE battles:
1. Disable card changing to another when one card is moved over another. Select rightmost card during battle and try to place and hold it exactly at the bottom line. Your intended card changes to another instead.
2. Highlight more clearly spell target when card is hovered over enemies. Lightning Bolt and Unholy Combustion cards show yellow circles under targeted enemies. These are not visible if bigger enemy covers smaller enemies for example opponents MBP covers one fighter and one assasin. Trying to target hidden assasin (not MBP) is very tricky.
3. Multitouch support. Try to press charge icon for your unit while you are already holding finger for another card.