Just right now I finished another V.large battle with same kind of mission and there were only 13 guys, wondering why.
It's tied to difficulty level.
Also, I've got an idea. While attacking any kind of ship enemies just walking around without any seeming point, okay it's original poor AI, it's hardcoded, you cannot change it, I understand. Here a few solutions I thought about:
1. Is it possible to place tiles which blocks movement but allows firing? It's quiet stupid that there no single embrasure on assault kinds of ships.
Yes it is possible to make such a tile, but I don't understand what you're trying to say... Could you rephrase that?
2. Make few new types of enemies = turrets, they can have ~3 ap(so they cant move and stays at place) and 33%-50% ap to shoot.
It's even easier - they can have as many TUs as you want, all you need is to set their Stamina at 1. However it's really hard to prevent them from spawning ex. inside a barn, UNLESS you specifically design an UFO so no one spawns outside. I was planning to introduce turrets one day, one day I will if I think they won't look stupid.
Also, even with Luke's extra UFO i still having 1 kind of V.large ship is it okay or I messed up something again?
Luke Extra UFO's do not add any UFOs, his mod only adds dozens of random internal UFO maps, mostly for Medium and Large Scout (Runabout & Cutter here). Yes there is only 1 kind of V.Large ship in this mod - so far
At least 2 V.Large ships are planned for foreseeable future - one will be named Battleship (since the old Battleship is named Cruiser, this was inevitable) and you will need a maxed-out airforce to even try engaging it. The other will be Lab Ship from FMP, added to some Academy Survey missions.
Meanwhile, a new version is up - churning them out mainly for Let's Play sake
Not a major update this time, it just fixes several minor issues and rebalances defence buildings, preparing for 0.9.1 (where there will be several possible types of ships attacking your base, weakest of them with 400-ish hp, so even having a single defensive facility won't be useless). Updating from 0.9.a to 0.9.b does not require much ado, just replace Resources and Rulesets, no changes to maps & other folders were made this time.
EDIT:
Yes, govt can and will launch retaliations. The chance for it is very low (unless you attack them directly), but it WILL happen sometimes. It works as intended, as kind of a natural-disaster situation. You will normally be able to weather a 1000+ points hit... unless you're not doing well in general.
EDIT2:
Checked that save, VodkaBear. No crashes for me. I think it was one of those random terrain-related crashes. Enable Save-Scumming if you have it disabled and simply try to land again.