Yeah I feel that way towards Duke. I don't hate him, he's just not that interesting a character to me (I loved what DDP did with him in their G.I. Joe: Reloaded series that was a massive shock) and any time they put him Snake-Eyes, and Scarlett in another stupid love triangle I'm already bored.
I hope Lady Jaye returns to the spotlight she is IMHO the best G.I. Joe hero, with Lowlight and Lifeline tied for second.