After discovering that there is no limit to the amount of danger room courses, I added the online courses to the Legend Grade. I then got the wild hair up my bum to create new character specific items for the characters that have none. I posted this originally in the bowels of an old thread started by nodoubtjr, who was the first person to try this. What's more is I created new danger room courses for said characters by copying other characters danger room courses and playtested them to make sure they are all beatable with said characters.
I created two different updates out of what I hope are the two most common roster lists a pc update and a psp update. The PC update assumes you are using the original roster + Cable. The PSP list assumes you picked Cable as your 21st character and dumped Sabretooth and Pyro for Cannonball and X-Man (sorry Jean fans there just wasn't room for Dark Phoenix).
The other interesting thing is it appears you can add as many unique items as you want to the game. The items list in both the PC and PSP upgrades use the same item list.
Here is the new gear:
Deadpool: Assassin's Blade
Ironman: Extremis Armor
Professor X: Moira's Charm
Pyro: Irradiated Fuel Tank
Sabretooth: Killer's Gloves
Cable: Relic of the Future
Cannonball: Blast Field Enhancer
X-Man: Plasma Armor
To use this you'll need to open the folder of the version you are interested in into the XML2 directory, just make sure to copy and replace the contents. Remember back up your data. Note: you'll need to start a new game for this to work.
Thanks goes out to nodoubtjr bringing the online courses into regular gameplay.