ST-60's what to do?

[a64pilot]

This is the story, I have ST-60 Tri-data instruments I guess you call them, they all work and even look nearly new as they have always been kept covered, but I wanted to integrated the data to NMEA 2000 and connect that to my Zeus plotter.
Now it's my understanding that this can be done, not really meant to work, but it's possible.
But the ST-60's are out of date, no longer supported etc., so it's sort of throwing good money after bad.
What is there available from SImrad / Navico / B&G to replace my ST-60's?
I sort of like having a dedicated wind instrument, speed I don't really need a standalone for that, but depth is nice to see big numbers and know how shallow you are.
Plus and this may sound silly, but I have three holes in the boat, with no idea of how to tastefully fill them should I go to one or maybe two MFD's.

Then there is the just how useful is integrating them into the Zeus? Should I just leave well enough alone?