There’s definitely a demand for a 737 out there, but I don’t know if I’d even download this thing if it were free. It reminds me of something that blacksmiths call ASOs - anvil-shaped objects. ASOs are low-quality things that look like anvils but don’t perform like a proper anvil. This aircraft is nothing but a 737-shaped object.
For me, the most important things in a third-party aircraft are the quality/complexity of the cockpit and the accuracy of the flight model. From what I’ve read this aircraft has all but two of those items. I’m reminded of how ticked off I was several years ago when I bought the J-model update of the Captain Sim C-130. The cockpit, where I spend 98+% of my time when flying, was exactly the same as the versions that I already owned. NO!
If the group that put this abomination out there, and took money for it, had any decency they would stop selling it and release it as freeware. I am constantly amazed at what groups like FlyByWire and Working Title have done in developing patches and fixes for existing aircraft, and I’m sure that there would be plenty of people that would do the same for this thing, all for the good of the FS community. But I fear that the lure of quick cash for the minimal effort expended is just too great for something like this to actually happen, and they’re content to ride this one-trick pony until someone comes out with a 737 that’s worth more than $1.29.