I agree that it could be a good time to develop a new HOTAS, however consider this -
Even though, as Wynn stated $500 every few years is a relatively cheap hobby if you take into considerations the cost of others i.e. golf, skiing, camping, model building etc etc there are people out there, and I'd be willing to bet the majority of them, probably aren't willing to fork that over every two years.
So, what would be more cost efficient to produce and sell at a lower price point? Modular HOTAS equipment. I would venture a guess and say that we would see Thrustmaster maybe produce modular throttles and sticks to replace those that come on the A-10 system. Say they could see these for perhaps $199-$299. They would probably make more money in the long run as that is a much easier sell to those who aren't as hardcore as some of the simpitters and such. Not to mention, it is infinitely easier for me to explain to my wife why I spent $199 vice $500!!!!