When making a subsequence often it would be good to choose where the resulting sequence sits - particularly in production workflows where it might be a different project.

Similarly it would be good to be able to choose the resulting subsequence to ONLY have the tracks that the clips selected are on - EVEN if this means that only V4 & V5 exist in that sequence - makes for easier patching when reusing (especially if track specific effects like track matte are used).

I'll reiterate my suggestion, made elsewhere, that make subclip and make subsequence should share the same keyboard shortcut.