Appears there is going to be a reasonable "Professional NLVE" coming the end of November or Middle of December.
Available supposedly for both Intel Linux and MAC. Its still 32-bit, but is migrating to 64-bit... works with D3D on Windows, OpenGL on Linux and I think OpenGL on MAC. Supposedly the code is nearly (97%) OS independent. With the main reason Linux and Mac support delay was due to the re-write to get it a mostly unified code-base, to support the rendering/display to work multi-threaded using small amounts of external libraries.
The Free Version, to be released doesn't support *MUCH* of the stuff you want to support. Though for $60/year, you can have all that "Pro" stuff. Which seems to me to be a good deal.
I'm still using OpenShot, which still has some quirks, but works very well for the price point I have... ($0)
I might actually buy this new software, since it tickles my interest. I might also have to get a new PCIe 16x Video card for my 8-Core workstation (and upgrade the Memory to 32GB (maybe not the memory upgrade... PC2-5300, Fully Buffered, CL=5, ECC would be about $800!!!)).