I question the point of this thread at this time of development.
The game dosent have all its weapons/armours/aliens yet that are planned so you can not balance things till they are.
TU efficiency may differ when armour and other kinds of aliens come into the game. For instance I would love to see an alien more tougher than (?)Ortonok, like four times tougher and with thick armour against projectiles. On top of that there could be a weapon gap, that for 2-3 moths of play you would not get a better weapon to kill it. Then, after a long struggle that would force you to come up with special strategies against it the aliens would make a mistake and bring a more deadly weapon that when fallen to the human hands would be a perfect counter for their own units[but not all of them].
I would love to see more decision crucial mechanisms like that. Either you take a lot of snipers/heavy guns but then you would be vulnerable to fast/jumping aliens course snipers and other big guns would have a mallus when using in RF [I think weapons should differ with RF, it is harder to react having a long clumsy rifle than a one hand sub-machine gun, for now I do not think the engine supports it], or you diversify and take some of these and these, were everyone knows that you become less efficient not specialising.
The armour mechanism already implemented also gives us the opportunity of using the best to man kind way of balancing the game and making it fun: the paper-scissors-rock mechanics. But instead of increasing the plasma weapons effectiveness I would suggest decreasing the current weapons damage values. IMO the first alien should be killable with normal bullets with ease, a warm up for the player. Then, the second kind of alien comes up, the tough one. He should be impervious to bullets but vulnerable to plasma and maybe partially to fire. And so on and so forth. A lot of strategy adjustments during the game so the player wont get bored and could find a new challenge as he goes. That can only be balanced as all of the items in the game are in.
For now the discussion about the game it self is pointless. On the other hand we can always mod the proposals from such a thread in a playground MOD in the mod section. Instead of agreeing that the plasma is useless we should propose new values for it and someone could [probably me
] give you a modified weapons file to play around and see for your self if the 'cure' is really working.
[Friday morning, am I making any sense at all?]