VPI Classic 3 Upgrades or Move On to Something New


I'm the 2nd owner of a VPI Classic 3, bought here on Audiogon in 2014.  Cartridge is Soundsmith VPI Zephyr.  Considering giving it some new life with a JMW 10-3D Unipivot Tonearm, Signature Feet, and ADS Speed Controller.  Total upgrade cost - $3,950.  

Or...should I go in a new direction and give another turntable a try?  I have no complaints about my current setup, but don't have a frame of reference for what I might be missing out on. 

Budget for a new turntable/cartridge combo is anywhere from $5,000-$10,000. Thoughts? 
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Sounds like the stars have aligned. It's always fun and eye opening to hear improvements in the system. How deep is the rabbit hole? Very. Enjoy!
Here's something to try.....take 2 dimes, put them on the record with no mat.... so that the dimes don't touch the spindle, but their heads face the spindle.   Put the VPI center weight on the dimes, and the peripheral clamp in place and tell me what you think