I'm not having that much luck with the activation rates so far, though there are a few possibilities I've noticed.
I have one last idea how to build up the teams to tackle those maps which I will try out later today.
This time I'll try to focus on destroying the first two waves asap and using a specific strategy for the last fight, having the last team being not the most powerfull one, opposite to what I tried so far.
The only question is whether they'll be powerfull enough to handle the last wave.