After contacting proDAD team to obtain further explanations regarding Studio plugin or "stand-alone" version (*), please find hereafter the answer received, which should give you some explanations to recent questions...

proDAD answer:
Before a Standalone version could be released, I´m sure a Studio plugin will be available sooner. Please don´t be too hard with Pinnacle - they have good reasons not to release it yet but in near future. And I´m sure that finally, if the full speed and all options will be available in Mercalli for Studio, everybody will be happy.

What sense would it make to bring it sooner and having a speed barrier or less options forever?
Mercalli is a great product - Many people want it - but everybody should better wait in order to get the finally best possible plugin. Although it might be hard to wait - what we do understand of course ...

(*) A stand-alone version does not necessitate any non linear video editing software to work. You use it as an independant version, autonomous, which is not part of any video software. This way, you use it without any video software, you render your movie and then use it into your movie software.