Celestion Ditton 66’s. ‘Upgrade’ to modern speakers consequences?

A pic of the crossover and inside of cabinet would be helpful here.  If they are updated properly and the drivers are in good condition, stay with them.  I have a set of modern "towers" from a well known company.  They retail for two thousand some a pair and are rated/reviewed as a great buy for the price.  And of course their description on the website describe them as using top notch quality parts.  Not so.  Piano gloss finish and all but once I looked inside I was very disappointed.

The electronics are basic, made overseas(not always a bad thing.)  Cost cutting by the speaker company for sure.  Only one small poly cap for the tweeter circuit and small steel core inductors.  Binding post is junk.  Not enough dampening of the cabinet.  The drivers seem OK though.

I revamped the crossovers with Clarity Caps and audio grade(?) electrolytic caps where needed.  The tweeter/mid circuit inductors are now good air core ribbon style.  Installed quality binding posts and added more internal dampening.

The result is worth the $$$ and time spent.  Now, they not only look real pretty😉 but sound much better(at least to me).  

You’ll need to spend in excess of $10K to equal the Ditton 66 in terms of full range power response. Focal Kanta 3 would be one to check out. Expect greater resolution and more articulate bass with lower coloration overall. If this is way out of the budget, sit tight and enjoy. Maybe try new speaker cables. 

Are they the Mk1 or the Mk2?

Thanks everyone for the contributions, very helpful and duly noted.

@twoleftears mine seem v similar to yours sans the wood renovation. Three loudspeakers and one passive radiator. With the MD (or is it the MF) 500 pressure horn midrange. (Which I think must be key to the 66’s distinctive sound..)

Are yours MKI or MK II?