Well considering that the TMNT Arcade game is already on XBLA, I'd imagine there's a good chance it'll eventually hit the Virtual Console. The other license based one I'm not to sure but I'd imagine they have a better chance of appearing on the Virtual Console now then they do XBLA.
Getting the license to some of these old properties can already be hard enough in some cases, but on XBLA they then have to make the games to support HD and include online co-op. I'd imagine all these factors can cost more time and money then some companies might want to do. This might explain why it's been over 2 years since TMNT came out on XBLA, and yet no other license based games have come out since, not even it's sequel, Turtles in Time.
But on the Virtual Console Arcade, since Nintendo isn't forcing third parties to jump through hoops like Microsoft does, I'd imagine a company like Konami might have more incentive to try and get the license to some of their older properties again, since it'll be easier and cheaper to put these games on the Virtual Console after finally regaining the said license.