Difference between the AntiMatter Cannons, Ballistic Weapons and Rail Guns isn\'t exactly amazingly huge.
Since Anti Matter Cannons are Cannons that fire projectiles, they aren\'t lasers - they are cannons. So they already are ballistic weapons - just the projectile is a form of energy rather than a \'\'kinetic\'\' projectile.
Next we have Rail Guns - Anti Matter cannot collide with regular matter or both are annihilated. So technically, in order to make sense of AM-Cannons, they have to be rail guns to suspend anti matter in space between the rails in such a way so that it doesn\'tcollide with the gun itself.
So technically, AMCs are also rail guns. They aren\'t kinetic rail guns like you probably are thinking of but that would require a much more complicated weapon layout.
How do you plan to implement recoil into a game with no moving parts? Add a force acting opposite to the direction of travel of the projectiles? Then simply slow down your ship every time you shoot?
It does look like OP has skipped a very important news post at the beginning of the year. Weapon system IS being reworked. It will eventually give you the ability to combine different types of weapons together to form new combinations. Sniper cannons, artillery, swarm missiles - anything and everything. There will be a total of 30 weapons in the game by the time thats done.
You need to keep in mind that physics and animations in Star Made, no matter how skilled Schema is, are fairly limited. This isn\'t Space Engineers after all.