The primary aim of this mod is to get away from the current gameplay which for the most part involves spamming tanks. We are introducing gameplay that requires, scouting and using a variety of units to be successful. Tanks are not the do-all units anymore, instead you need artillery units to take out defenses, tanks to take out artillery units, air units to take out the tanks, and AA units to take out air units. It's basically bringing Rock-Paper-Scissors to the game which we believe makes it more challenging and interesting. We're also making the factions' abilities exclusive. By that we mean only Nod use mines (so no APC mine drops) and they are also the only ones that use cloaking technology. The same applies for GDI who use more EMP now etc. We think this better defines the play styles of the factions so that you aren't just playing each faction more or less the same way.
These upgrades are applied after the railgun upgrade is researched in the tech center. Guardian cannons can also receive another upgrade to increase range and rate of fire.