The only time I did this mission it was over before it even began.
The enemies were deployed so tightly and so close to my team that I had no choice but to kill nearly all of them on my first turn (and I played with all sorts of restrictions to prevent myself from doing precisely that).
I see now there is another side to this too, because of all the friendly defenders. Of course in my playthrough I only got to see them running aimlessly around panicked Pandas, displaying all the smarts of a Rictus Erectus…
Enemy deployment is very poor in the game , I fully agree
I have read your post and those are interesting ideas, but it is complicated, devs will want easy implementations for haven defense,
and about scavenging sites, it is a lot of work to the overloaded roadmap I am afraid,
and those missions after next patch(fixed bug) with continous reinforcements will be hard enough,
and after mid game there are Acid Chirons, Sirens, a lot of nasty/tricky enemies