I have to say that people just demanding Ibanez make a new style guitar is a tad absurd. Call Ford and tell them to make somethign RADICALLY different. See what kind of response you get. That said, Ibanez has been coming out with some pretty good variations on an old design as well as some newer ideas.
for one the Jet King series is a cool throw back, albiet a cheaper guitar, but different enough for them. The RGA (arch top RG's are just what the Dr. ordered IMO, I'm still looking to nab one if and when I find the right deal.
Also, do you think Fender would just up and throw a new design out there on a whim? Tell me that test marketing and R&D don't have a hand in what comes out. They aren't going to produce a mass run of guitars based on a handful of guys wanting something new.
Dig around into the Ibanez catalogue and see how many different styles they have, the Pat Metheny model, Joe Pass, the JS
series, the Jem, the Artist series, the S series, pick one, and that is just the tip of the iceberg.
Ibanez's RG, IMO is the equivalent of the Stratocatser for Fender, a flagship model that has probably done more volume for them than most of their other models combined.
That said, do you have the money right now were Ibanez to roll out with a new design? I ask the same question to the guys who complain that the LA Custom shop isn't open to the public.