This is more a long term wish. But it would be nice if there was a larger amount of adventures to choose from.
Like some relying more on blocking and some on being able to find the right spot to bypass some camps or a straight bash and smash one.
I am not really good at blocking for example so adventures that rely heavily on blocking are a nightmare for me. In some cases it would cost me up to double the amount of units compared to someone able to block. So I usually go with adventures that rely less on blocks. A bigger variety would also be good to have I think as most people just do one or 2 adventures and ignore the rest. Or maybe change some of the unwanted ones to make them more attractive to do. (That last idea is probably easiest now that I think of it :P).
Anyways that's all ^^