Armin if you offer a microloop/hook I am quite sure you will sell quite a number of bars - at the moment everyone is stuck with North 2009-2012 Bars or old Core Bars.
I know that Microloops/hooks are only needed by a few percent of riders and were taken off bars as developers thought that stopper balls are good enough.
Only now with the boost of Airstyle it has become a need for many again!