Hello! Thanks for the suggestions!
1) Yes, I noticed this problem. The next update will increase the upgrade "Basic Tower Attack" 0.4 -> 1 (+1 damage per level). And I also plan to add specializations (attack, defense, grind, magic). Only one specialization can be activated at a time. Hopefully this will balance the gameplay for different types of players.
2) Preset for buildings is a good idea! Maybe I'll add this in later versions of the game.
Auto-build is fun, but much more difficult. The play area is rather unstable, there are many obstacles, debris, enemies. Probably not (but the idea is interesting. :) )
3) Maybe I'll add this in later versions of the game (But this is not very optimal in terms of strategy, I think. For example, auto buying cheap crate upgrades if you wanted to focus on magic or physical attack or poison and acid damage)