So far, the world energy cost of playing Season 2 is too high in relation to experience earned.
Season 2/Province 3/Stage 10/Hard costs 10 energy to play, and gives 2850 experience, or 285XP per flag.
I can play Season 1/Province 9/Stage 1 and earn 857 experience. At the cost of 3 energy, that amounts to 285.6XP per flag.
In my opinion, Atlantis coins do not compensate for the lack of experience points. Completing all Normal and Hard stages in a province yields 80 coins, so 240 coins for 3 provinces. (Was that enough for a summons? I can’t remember! )
Season 2/Province 1/Stage 1 should, at the absolute least, be equal to Season 1/Province 15/Stage 9, which is 334XP per energy, and progress from there. After all, you must complete Province 15 to unlock Season 2.
And…increase Atlantis coins per province!