Since 10, the updates haven't been that spectactular especially the recent 13 and 14 because of slow starting, long VST checking and several poor graphics (mostly buttons and their on/off state). But I think you got 15 right. It looks good in 4K, everything moves smoothly and fast startup.

I may not be the right target for this product as I am a sample head and I use SF for trimming and looping. I don't care about the new features you have put in since 10, but the instant previewing in folders of hundreds of files, the measures and beats in the status ruler, and the grid lines in the selection are essential to me. Even so, congratulations on a good version.