To be honest I can’t hear that prototype argument anymore. The track itself is nothing new. Yes, it is an inverted variant of the Vekoma track, but that does not make it harder to construct than other inverts. And FLY uses the same style of track.
The trains are new, but no prototypes. A prototype is something you build to initially test something and it usually never gets shipped to a customer. FLY contains a few track pieces from the prototype, but that’s all that’s a prototype. The rest is the first model sold, which might be vastly different from the initial prototype due to extensive testing.
Every custom layout is a unique coaster, which has never been constructed before. Does that make it a prototype?
If I buy the first car of a new model sold, do I own the prototype? No. I own the first one sold. Same goes in most parts for coasters.
The Maik reason Tripsdrill has not announced an opening date yet is probably the simplest one: They don’t want to create pressure or hurry and negative publicity (which is easy to get thanks to Facebook) when they can’t hold their promised opening date.
May I remind you of all the fun we made of SFMM because their 2019 addition opened in 2020 to the public?