Hiya Polymorph, thanks for the feedback. We've had some vastly different views of the game's difficulty. Some have suggested it is too easy at low levels. Are you spending your mod points? Gunnery and Weapon Cooldown to make your weapons hit much harder. Are you strafing and teleporting out when things get too nasty? Are you doing multi-player or single-player? Multi-player is significantly harder by design to encourage joining a squadron. Also, the spawns are randomized so sometimes you will encounter a dense fleet of enemies that is all elites and just too hard to take out. Avoid those and come back later.
Also, your post made me go look at the projectile collision code. Two projectiles that collide subtracting damage from each other is how it is supposed to work (exactly what you suggested). But currently the player projectile damage is subtracted from enemy projectile damage, but then the player projectile is instantly destroyed. However, the enemy projectile will still live if its damage is greater than 0. So that is a small advantage to the enemies overall. I will include that fix in the patch I send out tonight. Thanks for finding that. ;)