If they do go the phalanx route, I think they would do well.
I know, "remember what happened to the destroids, yada yada yada"...but now that the bargain-bin tomahawks and defenders are all swept out of the market, the ones left are not so cheap anymore.
Plus, the collectors who bought the tomahawk and defender will now need the phalanx to complete their destroid line...
Plus, development time should be relatively short since theyre picking up where Yamato left.
I'd say its a gamble, but a less risky one than when they released the previous destroids.