a nice idea would be to buy characters with gold or ironite. lets say 10.000.000 gold for corrupt general or some special eddies. the prices could be very high, but this would motivate people to grind. otherwise you will maybe never see a premium character. but it shouldn't be easy to get premiums.
the 3* evo runes for talismans should also drop in the dungeons, so that we can grind at one stage and get everything we need. i hate to swich between underworld and dungeons, but maybe this isn't that bad...
i really like the mentioned changes to the autogame mode. this mode is very repetitive and boring. i have to look every 2 minutes and click buttons to start a new autoplay, that sucks a lot.
autoplay mode or autosimulaton would fix this issue.