I have 400 medals, and I haven't attacked in over a week now. The constant attacks almost never get me a treaty. They are getting the majority of my resources every time without "defeating" me so it gives me medals. I throw attacks without doing anything to lower my medals but minutes later I'm being farmed again. I'm making 50-60k gold a *day* and around 30-40k food. I spend as much as possible, usually giving in and using crowns to wipe out resources. It's been taking a week just to upgrade my walls. I'm still hovering around 25 attacks a day, most of the time I have less than 5k of each resource but they still come. It's really, really making me not want to play. I was attacked 7 times today alone within 3 hours. Yesterday I didn't even have enough resources to update anything at all the whole day.
i've been classical for over a week now too, i believe, at the same medal range. not sure how you're not getting a peace treaty with your town center vulnerable if you're using blackbrain's base layout.
i also use this base (or a close variant of it). short of people in the medieval age with generals smashing my base, it's held up INCREDIBLY well. as in, i've probably lost less than 50k of each resource over the span of an entire week to people in the same age as me, and i hold off most people in the medieval age too.
i've also managed to upgrade almost everything. at the end of the day, this game is about successful attacks and not successful defenses. i can make 50k/50k an *attack,* so i'm pretty sure you're going after the wrong bases or your play style is lacking in efficiency.
in any case, good luck. i'm not sure this will help, but my army consists of:
4 cataphracts
1 miner
2 calvary raiders
15 archers
16 heavy vandals (i'm german)