Hmm, if you're going that way, why not do the same with Heavy Cannon, Auto Cannon and Rocket Launcher, and (possibly) their ammo (ammo is arguable, even though X-Com has prototype weapons, there is probably an open-ended supply of their ammo available, plus, ammo is better made in factories than hi-tec workshops...)? After all, they're specifically-designed anti-alien weapons. Plus the player gets a CHOICE what to do with them bored engineers
Hey... Lets not get TOO CRAZY here
Not a bad idea, though.
I'm actually in the middle of writing another mod right now that starts you out with more standard Terran equipment (and improved General Storage [2x space for 2x the upkeep / cost to build new ones], another Living Quarters, and Alien Containment) in exchange for reduced starting cash equal to what they would have cost you.
I just need to figure out how to change starting cash or this is sunk :O