Note this is more of an early game analysis, and assumes that you somewhat outnumber the ai in the small scale(that you are hitting one or 2 guard posts at a time).
Very interesting. Especially as I think that fighters are not the worst unit (bombers are).
When I started this game, I always ran out of metal. And it took a while to find out that that was because my bombers got killed and replaced. Losing all your I fighters means 17K metal and 17K crystal. Losing all your I bombers means 120K metal.
- At start I never fight when I "somewhat outnumber" the AI. I only fight when I decisively outnumber the AI
- Hitting two guard posts at start is a recipe for disaster
- It is the purpose of the fighter to die. They are so cheap (100+100) that they can be replaced. They cost less than 1/3rd of a cruiser or bomber.
- Bombers die like flies.
I start out with something like:
- Build 150 units in the ratio of 7 fighters to 1 special (usually parasite) to 2 Cruiser II (I always upgrade these at start). Zero bombers.
- With the resulting blob start killing AI. Make a blob with your fighters up front. Group move to AI blob. As soon as it comes towards you start retreating. Once the blob starts thinning out, halt your cruisers and move all your fighters forward, fly through the reduced enemy blob and waste his cruisers.
- I have few casualties, as many of his ships are killed by my retreating cruisers. Most of my casualties are fighters (cheap).
- Keep building units in that ratio, and when there are no more fighters to build, upgrade to Fighter II (150+150) and build all of these as well. In my experience you can never have too many.
I lose mainly cheap fighters. I lose no expensive bombers as I have none. I lose few expensive cruisers. That means that I can build more and outnumber the AI even more. This is at AI 8.
Lets take an early assault. If you want to be able to hit a target and keep moving, you need to outnumber your target by a certain amount. This lets you strongly keep losses down in both your bombers and your cruisers(assuming you have your bombers screen the cruisers to kill incoming fighters, then move them in to help kill turrets).
5:1 is a good amount for outnumbering. I don't use bombers for turrets. Fighters and cruisers do nicely (albeit a little bit slower).
Are bombers worthless? No. They kill forcefields (though with many casualties if the forcefield is heavily manned). They are the only thing that kill (super)fortresses. They are very useful against fighter raids. Bombers III and IV are much sturdier and much more useful.
But (IMO) bombers suck at start as they die so easily (one cruiser missile does it) and from long range.