Interesting stuff, though one could picture the Team Members just hunkering down and waiting for their foes to blow themselves up, without firing a shot.
Though it's interesting than in many ways the most difficult and expensive piece of technology to develop in terms of weapons would be the bullet themselves.
During World War 2 when most countries urgently needed automatic weapons fast, very fast. The Brits came up with the Sten, the US the Greasegun and the Russians a plethora of similar weapons. Since then the Kalashnikov has joined this range of weapons that can be knocked up in a garrage.
So Krell and so forth may well be coming up with a variety of simple weapons to take advantage of captured ammunition.
Another thing is a future empire may well come up with a weapon that uses limited ammunition and is deliberately less effective. The loss of a few militia is worth it to prevent bandits or rebels getting their hands on ammunition and building weapons around them. One soldier selling an allocation of 50-100 bullets could equip a good platoon for one strike, to gain even more.
The British Empire favoured this for a while,
http://world.guns.ru/shotgun/brit/gr...ice-gun-e.html
A weapon that holds one round, is unweidly and who's ammunition was apparently too underpowered to do much more than wound. Enabling the local royal professional police to equip unreliable militia with a weapon that looked mean, could be used for shooting up the locals without causing a massacre and would be hopeless outmatched against a foe armed with state of the art; webleys, enfields and possibly even dreaded Lewis guns. If need be a futuristic version could be equipped with slugs if need be in a Morrow Project based emergency.
This provides a modern way of equipping a foe with out wiping your team in their first encounter. Of course such a foe would probably soon break out rather more sophisticated weapons for their elite troops, this might provide a shock.