Re: Joist repair options
If you think your inspector is unqualified to be advising on your home, call the building department and request that someone with historical structure experience be the one to do your inspections.
Since you've stripped the place to bare studs, you can expect to bring most of the structure and it's appurtenances up to current code. That may or may not mean sistering or replacing joists that have not been spliced or supported correctly, as shown in pic 2.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!