Twi should redesign SP. Change the name for the first to practice. Never ever again use it to advertise game in form like it is now.
You can be carried by the creation of a system similar to that known from the americas army. SP generally contained the practice mode on MP maps and a set of mission / training that MUST be done to make the player able to play MP with sniper / mg / SL / TL, or physician training, if you had a system similar to that known from the AA. + maybe some tactical trainings so people could get more familiar with game.
This is general concept, it's your work twi to develop it if you like...
You can be carried by the creation of a system similar to that known from the americas army. SP generally contained the practice mode on MP maps and a set of mission / training that MUST be done to make the player able to play MP with sniper / mg / SL / TL, or physician training, if you had a system similar to that known from the AA. + maybe some tactical trainings so people could get more familiar with game.
This is general concept, it's your work twi to develop it if you like...