Infinite Musou and Rage are pretty much necessary here considering you can't slap Roar on everything and how SLOOOOWLY stuff fills up.
Also, I'm gonna have to join the "Infinite Bonus Points plea!" squad >.< It would be nice to be able to start new runs without losing anything and not having to worry about points.
Me too. Since you need approximately 70-80k bonus points to buy only lvl 6 weapons for all officers, and at least 17k to start a new run with all options on the other page active, you definitely need that cheat.
As for Rage, why? I much more rely on stratagem points than on Rage. True, altars restore your SG, but placing it in the thick of battle just to have it destroyed is not worth it. On the other hand, since it affects both you, your allies and your enemies, that makes for some hilarious battles. Having infinitely active Indomitable can make you laugh at your enemies' attempts to kill you. At least, it does to me; can't say for others.
And if you have trouble filling out your Rage Gauge, just make an edit officer, give him/her Zhou Yu's moveset, go to enemy base and use his EX2.