Miscellaneous Suggestions:
1) To be able to launch multi-battles, tower of misfortune ascents, series of clan bosses... While being able to return to the bastion and manage its champions, fight in arena, etc... And even off- line. It would save time for the days, see offline
2) Have more multi-battles, or even make them completely free from the moment you have enough energy. I don't see the advantage for Plarium in this limit, and for us it's a waste of time.
3) Accelerate the Arenas in 3x, and be able to pre-select several arena challenges and launch them automatically, there also the possibility of being able to return to the bastion.
What made me stop the 1st time on RSL is the amount of time lost per day, and it will be the 2nd reason for my stop. I use RSL in the background, while I work. But RSL forces me to come back to it too often, I can't keep up with the pace without sacrificing my professional activity.