Still my Dunlavy’s (bought new) show no signs of age but they are well looked after.
Crossovers are still like new, no electrolytics to worry about, no corrosion or bad joints, internal cabling perfect. Never pushed really hard, but always connected to big amplifiers, rubber surrounds talc powdered every 3 years and cabinets always clean and shiny as new. Keep them or not they should perform nicely for years to come. Still if there is any deterioration in sound due to age i cannot tell but i am not going to replace any part just to find out.