I feel like the France unique units should be changed to some sort of Knight like Knight Templar. Throwing Axeman feels too much like a blatant copy from AOE2. Afterall, France fielded the largest Knight army in the Medieval age and is the most famous country with them.
It's certainly not a display bug, Grailyn feels easier because he scales with temple faster than most players in our merge realms. I have attacked both old(those with under 1m wall HP) and new towers and can feel the different clearly.
We got your suggestion. I suppose we will consider to make runestone drop from dungeons or add more ways to get. As you claimed the temple was originally designed to help low power players catch up, maybe you could consider swapping the enchant bonus to make the research speed boost from Temple of ...
Now after the recent may day pack, I'm starting to fight people with 20% more troop stats and 30% bonus from attributes than me. I can't even scratch them even though both are 40 and nearly equal in research