I don't have a good answer. The only advantages of a new panel would be to shorten the unfused length of the service entrance wire, gain more physical space inside the box for ease of working in it, gain slack in the incoming wiring by going to a taller box, and maybe change the 1/2 space breakers to full space breakers. It started out that I was out of neutral lugs. I have corrected that. The electrician that came out bid installation of two new ground bars. The meter which was on the outside wall is now part of an add on garage. Power company seems ok with it.
Many people here suggested that if it was an older GE panel, they would change it outright. Don't know if they know something about it that I don't.
Thanks for the reply