[BlueGalactic]

Is it OK if I modify/extract files from a mod (I am talking about any mod, not just ProGen) for private use and not make it available to the public online? The reason I am asking is I want to make the perfect modification, which sometimes requires combining several mod elements.
Here is a list of the modifications I am making. I am calling the Chinese generals by their "first" names because it is conventional in Chinese to do so (last name is first and first name is second/third).

I am giving Nuclear General Tsing a Nuclear Black
Lotus (she can put nuclear bombs on buildings and
vehicles) and a radiation rocket attack for his Red
Guard. Also, nuclear version of the Gattling Cannon
that fires nuke rockets.

For Tank General Ta, an industrial facility (to
replace the internet center and reduce vehicle
costs) like the one for General Leang in
Shockwave, a vehicle capture ability for his Black
Lotus, his hackers will go into the industrial facility
instead of an internet center, and a tank bunker
(either the Rise of the Reds Chinese version or the
Stinger model that Beng mentioned earlier). Also, a
double-barreled Battlemaster tank and a non-
napalm version of the Inferno Cannon called the
Javelin.

For Infantry General Shin, a sniper and a biohazard
technician.

For Leang, a combination Nuke Napalm attack for
her MiGs, just like in the Boss Generals mod. Also, a
bunker upgrade for the Emperor Tank that can
replace the Gattling upgrade (now, the Emperor
can be upgraded to a Bunker of Gattling cannon).
Also, an artillery defense system to complement
the Gattling cannon and fortified bunker

For "Pinpoint", laser artillery and a Laser Defender
(fires a beam instead of a rocket). Also, a laser
version of the Fire Base.

For Alexander, EMP Missile Defenders, EMP TOW
missiles, and EMP Tomahawks. Also, a Tomahawk
Fire Base that fires EMP Tomahawks.

For Granger, Air Raid Fire Bases based on the
Contra mod version and a summon airstrike ability
for Colonel Burton.

For Ironside, Tomahawk Fire Bases and Tomahawk
Patriot Systems based on the mods Shockwave
and Armageddon respectively.

For Dr. Thrax, a remodeled Toxin Marauder (based
on the Boss Generals mod) and Toxin Jarmen Kell
(armed with a spray gun for garrisioned infantry)

For Prince Kassad, sniper Rebels, sniper Tunnel
Networks, and prestealthed bases (all buildings
autocloak, not just defenses).

For Juhziz, a preinstalled Scorpion rocket for
Scorpion tanks.

For Deathstrike, combination high explosive and
toxin SCUD rockets in his SCUD Storms (7 H.E. to 2
Toxin), and spy ability for his Prison that reveals all
enemy concentrations.

[Phantom139]

As long as it is Private and does not end up for download anywhere, you should be fine.

[BlueGalactic]

It is private. I am either too lazy to upload it or don't know how. Also, I wouldn't want anyone to modify it mercilessly. Balance issues are important in mod designing.

P.S. I am renaming General Townes as General Charles "Pinpoint" Townes after the American scientist who worked with lasers. For Ironside, I am thinking of the name David "Shockwave" Ironside (the David part is after Dwight David Eisenhower, another Commander-in-Chief, and "Shockwave" because he uses shock-and-awe tactics).

Edit: I am in the planning stage for the private-use mod. I am giving each side enhanced units related to their weapons. Example: EMP Defenders for the SWG (Super Weapon General) and PDLs for all of the LG's (Laser General's) tanks. Also, I am giving General Alexis Alexander the nickname "The Juggernaut" because her forces are virtually unstoppable.

[IraqiPeopleRocks]

Its fine to use other mod's content for personal use but if you release it without any permission to the original authors of the contents you used, prepare to be assimilated :P

[BlueGalactic]

Originally Posted by IraqiPeopleRocks

Its fine to use other mod's content for personal use but if you release it without any permission to the original authors of the contents you used, prepare to be assimilated :P

I certainly don't want that to happen.