Thinking ahead to things that should change with the Battle of Yavin, I’ve got a few ideas.

Yavin 4 isn’t visible in the fly-by or is half-blocked by the gas giant (like the test renders of the '97 scene)
Redo the opening fly-by to include more variety with the X-Wings (i.e., instead of all looking like Wedge’s Red Two, use the elements of the relevant models).
Trying to make the CGI shots blend with the models more in terms of movement and visual consistency (i.e., give Luke’s CGI X-Wing different marks to match the physical model, use movement patterns more similar to those from ESB and ROTJ)
Get volunteers to add dialogue for the expanded battle sequence (if it remains).

These would require more work with the CGI guy Ady has mentioned before (or other CGI-inclined folk - many are on YouTube with their samples), but it’s doable.