I have lurked, searched, quested, ...

1967 Buy JBL C50 Olympus S7R.
mid-1980s Reconfiguration to 3-way system. New horns, crossovers, 077s, cutouts in back of cabinets.
1994-1996 Re-cone woofers, N8000 new Lpads, LE85 align diaphragm, dealer tests all components.
12-2015 Most recent re-foam LE15As.
08-2018 Inspection, cleaning, spectrum testing, catch upgraditis.
So: JBL C-50 cabinet with S7-1 (LE15A, LE85, HL92, LX13), PR15, N8000, 077 and original HL91s in closet.

I am contemplating a project for long lonely Winter nights:

1. Replacing all inter speaker wire with something like NeoTech stranded UPOCC copper in teflon.
I do not expect much but will feel better about doing it.

2. Doing whatever can be done to improve the sound quality. I am willing to spend, excluding secret sauces, whatever will
produce results commensurate with the expense. The crossovers are 35 years old so they are my first thought.

I have considered:
Lipstick on a pig?
Relax and enjoy as is?
Buying new products but have not found anything.

LX13 was the consumer version of the 3110 Pro Network which are available used.
The crossover housing itself may be too small to stuff with replacement poly caps so I might build external crossovers cannibalizing 3110s and getting new capacitors, Lpads, whatever.

And do something similar with respect to the N8000.

All comments, suggestions, criticisms are appreciated. I am flameproof. It comes with age.