==Pre-Classes, Pre-Raiding ==
This topic does bring up an interesting point, synergies are very important in Empires.
After you have a good 5* Raid defense team, a good 5* war defense team ( maybe one for each War Rule), and two good rainbow 5* attack teams ( total of 15- 30 5* heroes), you can fill out your roster with unique 4* heroes like Jackal, Falcon, Wu Kong, Wilbur, etc.
Gryphonkit, my wife, raids in high diamond with 5* 4.80 Obakan, 4* 4.70 Hansel and three more purple 4* 4.80 heroes ( her defense team is all 5* heroes).
Recently she was #30 on the Top 100 Global list.
==Devs response ==
I do however disagree with the original post.
Both rumors, and teaser, show the Devs have addressed the topic’s complaint.
Raids disallowing certain heroes, class quests disallowing certain heroes and classes making Azlar & Quintus more unique through talents/ passive skills are coming changes that will strongly encourage a wider, deeper roster of 5*/ 4* heroes and make Classic 5* heroes more useful.
==Finite Content ==
Unfortunately the Devs can only program so fast, and some big spenders will outstrip the speed of new heroes and activities.
Most MMO that last 2+ years have cycles of original players leaving, and coming back, as updates are added, they race to be the first to max the new content, then drift off until more is added while new players and less rushing players tend to be more active in the lull between updates.