Re: Grafting from a failing queen?
Take the queen, put her in a nuc with fresh drawn comb and plenty of nurse bees and see how she does. Spotty could be her but it could also be the old comb. I don't think genetics change as as we get older so she should be able to produce qood eggs which your starter hive will turn into good queen cells. She may be into the quality, not quantity, phase of her life. ( That is what I tell my co-workers too)!
Thankfully, the bees are smarter than I am. They are doing well, in spite of my efforts to help them.