While Avid has better media managment, sharing and trimming functions for editing..most people use After Effects for this sort of thing.

Try using the Frame Flex feature. You'll find it by right clicking on a clip and selecting Source Settings... from the pop up menu.

Your MacBook is probably the closest you're going to get to "correct" without a calibrator. The Benq is (was?) pretty good out of the box, but without a calibration device, you're going to have to use your eyes to see how close the 2 monitors match each other. I'd suggest looking at both the MacBook and the Benq side by side and

Looks like your audio files are .mp4. If the audio files are online (in other words, if you can hear them if you play them from a bin), try adding ".mp4" to the box under Ignore extension. Or try entering just a period.

Make sure you've got the latest Nablet XDCAM AMA plug-in too.

MC doesn't run on Linux.

Older versions should still work. Your license should allow you to use any version released before the license expires.

Sorta. Adjustments that are common between Media Composer and Symphony should work (don't take my word for it, do a test to confirm), however Symphony specific color corrections like channel adjustments or secondary colors won't be seen unless they're rendered on the Symphony system first. If you want to play it safe, disable the Symphony

Suggest you contact Avid support and open a case.

To my knowledge only FCPX supports ProRes RAW at this time. We can't speculate here so you'll have to draw your own conclusions as to why it's not supported by any other NLE at this time. Perhaps the DP could use a more widely available RAW format?