How can I:

a. make it so that only one era is available
b. make it so that only one team is available
c. make it so that only one unit is available
d. remove heroes
e. add a new team that is allied with the republic (ex. wookies on kashyyk)
f. change reinforcement counts for both teams

I know a lot of these questions seem wierd, but try not to question too much...

Use the search function. All of these questions have been answered.

a. delete the sections calling them in the addme file

c. delete the calling of the unit in the LUA
d. same as "c"

f. modify the values in the LUA