It seems Ackmeena is the only weirdo figure to have any genuine momentum behind her, but coming from the Holiday Special might make Lucasfilm shoot her down. (Although we did get Boba, so... who knows.)
Fan momentum, positive or otherwise, did result in Wuher, BoShek, Gargan, and soon, the Ice Cream Maker Guy. All movie characters, many of which were genuinely neat ideas for a figure, but mostly had a heavy ha-ha wouldn't-it-be-funny-if factor that helped fans demand it. (And there was the vintage Gargan proto, which surely helped.)
If the Tonnika girls didn't have all this alleged legal baggage, I'm sure we'd have them and not even need to ask Hasbro to make them. Heck, Galoob even made one of them.
Personally, I'd push hard for Vlix, but nobody else seems to be vocal about him. Ackmeena is getting a lot of buzz, especially from Adam May over at GH, so I'd say if a fan rally were about to start, it'd definitely be her. Bea Arthur absolutely has the smirk appeal that carried eyeballs to BoShek, Gargan, and ICMG, it's just such a weirdly appealing idea for a toy that it would seem extremely unlikely that fans will not start demanding this one over the next 18 months. No matter how much sense Klaatu would make, or a super-articulated Rebel from Endor, the Tantive IV, or Hoth, or anything else... you can't out-weird Bea Arthur as a space bartender. (Except maybe one of the Harvey Korman characters.)