Well, I might be wrong or I might be right, in any case I would like to leave this post here as a open discussion. The discussion I want to bring is about increasing the castle cap and why it should never happen IF there's any plans of doing so.
First of all, if there's any plans of increasing the castle cap I feel like it's better to tell us (or tell me) already, because I'm most likely going to quit right now. The main reason that some of us still playing on servers with whales is that on level 40 you can somewhat catch up, with a increase of castle cap it's not going to happen.
If the castle cap increases to 50, that means we would have good 6+ months of buildings ahead, and that's if you're on a server where there's already some players on 40. If you're on a server where the majority is 30 and your whale is 40, that means he will be a year ahead of you when you get to 40.
For a castle cap increase, the game would need a complete rework on how heroes work AND no build rush after level 40 (for castles before it we don't need too, but we know it's never going to happen). It's already hard enough to balance around tier 13 units when you can get heroes skills that gives 30% on top of stats, the difference between level 12 and 13 units is high enough with heroes already, imagine when you put it from 14 to 13, or in the same perspective even 15 to 14.