Not generally a fan of recuts but have done it.
Last round was wanting a training
/ cruising headsail setup.
Found an oversize genoa
and took a largish wedge out of the luff, installed new luff tape and tack.
The wedge took out the worst of the stretch and the preserved the existing sunbrella on the leech.
Luff was cut to match forestay sag resulting in a utilitarian general purpose sail that fits.
Next is a #3 laminated genoa
with partially shredded leech.
I'll take out the batten pockets, locally stiffen leech with recycled fabric
from a blown out main of similar construction
and add a lightweight UV strip from spinnaker
cloth for the roller furling
If I get one season out of the reclaimed sail I'll have a more valid data set on which to make decisions for a replacement.
You can't make a silk purse out of a sows ear but a sail with 60%+ life span that can be made to fit produces a pretty effective handbag.
Realistic expectations are the key.
Free sail cutting software
is a great help to visualise the changes and minimise the effort.