You know, this Lucky character sound really awesome! I guess it can be hard to say what exactly they'll be planning to do with these "free roaming" animatronics. My guess is that they could use them for parades. It would be cool to see Lucky or something like it walking on its own in a parade, interacting with the crowd. This way they can have a character who doesn't obviously look like a guy in a costume interact with guests.
The other thing that I think is kinda cool about this guy...and his apparent "wizard friend", is that they are original creations. Disney could have gone and made Imagineering turn an already popular Disney character into a free roaming animatronic, yet instead, they actually made their own charaters. I guess that's not the biggest thing to be surprised about, but you have to admit, Disney has recently been making darn sure that any new attractions featuring characters would use characters from a Disney movie or something (ala the new Tiki Room, The Magic Carpets, Philharmagic, and all these rumors like adding Stitch to A:E or putting Nemo in The Living Seas). I mean, this "Lucky" guy and his wizard friend almost remind me of a similar duo that was created from scratch and became quite popular, original characters (Figment and Dreamfinder).
Hopefully they plan to do something with this newfound technology sometime in the near future for some new attraction....of course, for now, I think we can all be entertained by random Lucky appearances.