I’ve no problem with the level cap increasing every month (assuming they keep it at 10,000 points per level) because you should be able to comfortably get about 2000 points per day - completing daily quests, natural stamina regen, video crate drops, free refills 3 times a day and by buying 2 refills for 50 diamonds each (which you get from even a half decent coliseum and arena rank)…
10,000 (points) * 5 (levels) = 50,000 (total)
50,000 (total) / 2,000 (per day) = 25 days, which allows 5 days per month for others to catch up… Even if you only manage 1,700 per day ( that will still have all 5 levels done in a month…
What I see as the main problem is when they increase the badge cap, because the drop rates are terrible… It’s practically impossible to keep up on that, even with just 15 heroes (which is what is needed for Coliseum and War), nevermind all 45+ they have released at the moment… And it becomes even harder still when you consider that you also need to fight in Elite Campaign to increase a heroes star level too…