Haha wow that's a very clever hack you have found, I would never thought of it! First I developed the Big Bertha to be long enough to destroy enemy base on purpose so in case player loses on a high level the way back is then a bit faster + some prestige farming. But with the surrender button it is indeed crazy :D Even though I really appreciate such hacks I'll change the mechanics a bit :D
Talking about ants - that's actually very interesting. My idea was that they would still be powerful with all the upgrades but.. not as powerful lmao! Maybe I have a bug somewhere, gotta check. And was it ok performance-wise with ants only on later levels? I guess you must have real swarms of them
Thanks for playing and sharing your findings :)