12 is almost identical to 10... Only it is listed as water cooled. That seems to be it...
In fact, we have three different LMG proposals, none as counterproposal or modification:
4 (small): air-cooled, man-portable (light) and belt-fed machine gun, using the 8x54mm bullet and with an integrated bipod.
10. A LMG chambered for the 8x54mm bullet featuring a tubular mag, collapsible stock and blowback operation. The length in all should be no more than 1.5m and should be designed to be easily mounted on a tripod or a mount.
12.(medium) water cooled belt-fed lmg with a high rate of fire that uses the 8x54 round
Their only differences seem to be belt-fed and air-cooled vs tubular magazine and collapsible stock vs belt-fed and water-cooled...
Adding a vote for B, and adding ICBM's votes to the tally.
And, since we lack a large project,
I'll add a vote for 3.1. Improve the 120mm gun (medium)
Ukr, Top, ICB
C1.1. Begin designing it anew (medium)
3_1 AseaHeru
2. 15mm machine-gun (small?)
Ukr, Funk, ICB
3. Light armored car
Ukr, 3_1
4. Improve infantry rifle(small)
Uri, 3_1, Funk, AseaHeru, ICB
5. LMG (small)
3_1, Top
6. Improve truck engine (medium?)
3_1, Top, Funk
7. Body armour (small?)
Top.
8. Binoculars (small?)
Top., AseaHeru
9. Fully automatic Valyize SMG
,Funk
10, MG useing our heavy rounds for either squads or crafts
, AseaHeru
11, 6 wheel APC for troop transport / basic combat / convoys
, AseaHeru
12.(medium) water cooled belt-fed lmg with a high rate of fire that uses the 8x54 round
ICB
13.(small) small patrol boat with a mount for machine guns
ICB
14.(large) quad-plane similar to the Fokker mk3
ICB
15.(small) 20mm cannons for lightly armoured targets
ICB
A. Trucks factory
Ukr, 3_1, Funk, AseaHeru
B. Expand docks\salvage destroyer
Ukr, ICB, 3_1
C. Academy
3_1, AseaHeru
D. Switch production to infantry rifle.
3_1
E. Rocket test chamber
AseaHeru,
F. Farming anemones
ICB
Alpha: Sell half of produced Valyizes
Ukr
Beta: Sell half of produced trucks
Ukr, Funk, Aseaheru
Gamma: Buy aircrafts
Ukr, 3_1, AseaHeru
Cheap
Har, 3_1,Funk, AseaHeru
Reliable
Har, 3_1,Funk, AseaHeru ICBM pilot
Easily Disassembled
Har
Remarkably accurate
ICBM pilot
Heavy punch
Funk, AseaHeru ICBM pilot
Lightweight (In fact, it might almost weight nothing)
3_1
Inconspicuous
So, coming out to:
(1) Improve the 120mm gun,
(2) 15mm machine gun
(4) Improve infantry rifle
(6) Improve truck engine
(B) Salvage destroyer and expand dock
Valyzie pistol: Cheap, Reliable and Heavy Punch.