First of all I love this game. However i am becoming more and more frustrated with not being able to play because of extremely high training times.
Please lower or cap the training times for the hereos. Lv 15 to 16 is 4.5 hours. I play for 30 min and all my characters are ready to level. If I leveled all 7 that would be over 24 hours to level. Please at least allow us to train more than one hero at a time.
Plus the advanced hereos are outragously expensive. At least allow an easier way to access gems. 1 every 5 party levels is way to low. Plus the few you get from the lv 4 dungeons are few and far between.