I agree with most of your points, El Zoido.
The Campaign map AI is lacking at this point.
I definitely think some way to trade in a few cards for a randomly selected new card is a great idea.
The RTS mode is really hectic, and the high population greatly favours the AI. If you forget to be constantly producing for a short time, you will get overrun to the constant stream of units, and lose map control, and once map control is gone, the high population makes it unfeasible to dig in and wear the AI down.
The Dragon's single-target buffs do seem weak given the reliance on masses and masses of units, and the long cooldowns on them. What use is there for the Dragon's Aegis buff when the Shaman's Immunity is just as good and you can have a mass of Shamans? Maybe making all the single-target ones into multi-target would work better.
