1. I don’t mind adding a few more types of bot teams, but it may be necessary to maintain balance.
For example, I personally set up pickup games with people I know to test specific offensive tactics against specific defensive tactics.
If the bot teams are improved too much and can meet all kinds of needs, interactions with real players might decrease.
2. I'm concerned that, this way, the game engine will be thoroughly analyzed very quickly.
The biggest difference between NT/U21 teams and regular teams is that NT/U21 teams can easily have various types of players.
This way, it becomes very easy to use pickup games to analyze the game engine.