A rigging option?

I see minor rust and hairline cracks at most of my swagged terminal ends but the 3/8 wire looks and feels good. What is the thinking of folks in terms of cutting swagged ends off and going mechanical (norsemen?) and making up any difference to turnbuckles with toggles? Turnbuckles are clearly fine. Whole rigging package is probably 20 years old but the wire looks good and the cost savings on just changing the bottom ends (versus change everything) would be significant. I will check the top swags in the process but they appear to be good probably because water runs down not up...