in my canon:
-The RRoD is a Stabilizer ring.
-Teh "Cap Shield" is a wind elemental weapon (Think J-RPGs)
-The Backpack is the generator for the Chest thing and a Booster for the Tornados.
-The Chest HUD is normally used when the Gar Typhoon Knights "flew" in battle to avoid colliding with each other. Syklone now uses it to crash into the bad guys while avoiding the good guys!