The real issue/s with the game are that Inno has fethed it up to the nines and there is NO balance anywhere now;
- Early game, especially Ch1-3, fighting is literally all but impossible to maintain due to both no-existent troop production capabilities + still unlocking the basic troops. Combined with the enemy having instant access to ALL their troops = player is screwed.
Thus, players are forcibly steered into a mostly catering play style.
Things get a bit more evened out in Ch's 4-5, but military is still iffy until the player can at least start unlocking their 3* barracks units in Ch6.
- Mid game becomes a total nightmare for anyone who invests meaningfully into AW's. Enjoy being screwed over by massive cater costs & unsustainable unit sizes in tournaments + spire...
Gets even worse in Ch9-11 once you add into high costs of Orks + mana, while still having only what's basically "baby's first ork/mana farms", unless you somehow managed to keep a stockpile of Mana Huts hidden away and/or can craft a sizable number of Ork Nests. (ie: at least 6-8+)
And by 'over-investing' in AW's, I'm talking like only 50-60 combined AW levels... Since you're basically forced to place expansions to maintain city productions, and avoiding research means never advancing, then the only thing you can 'sacrifice' are AW's, making them now more of a detriment than an actual boost to a city.
- Late game finally evens out somewhat, as troop productions can keep up with the sky-high costs of fighting, but catering becomes basically impossible to maintain as a play style since those costs keep inflating at an exponential rate.
Of course, this only lasts until the end of Ch15, since both Ch's 16 + 17 simply gank players with negative gains overall.
Basically, TL

R - the devs are playing in a totally different reality from the rest of us, and have no clue what they're actually doing.
The whole combat system needs to be nuked from high orbit and entirely redesigned, while the formula used for calculating catering/battle costs was obviously made by someone who graduated from whatever the flying feth this "New Math" BS being taught in schools these days.
