i have a good ideea for epic war 6(when u make it).You can add more speed like x5 and god's, lord's or king's. God's are stronger than titans ,lord's are stronger than heroes , and king's are like lord's but with horse.You can add hidden monsters, you can get they by unloking achievements.
Hmm...i have a good ideea.After defeat of the super yeti(lv 16 epic mode boss)you can add a new campaign or a game + where are different monsters but same heroes