Probably the easiest change would be a Rega arm, probably the RB1000 or RB700. The JMW arms were designed to be drop in replacements for Rega arms, so I would imagine that would work the other way too. It's something I've considered too, as it would move you from a unipivot to a gimbal bearing tonearm.
Of course this would probably be a lateral move in the long run, as it may make some improvements while also offering it's own limitations or problems.
Different technology = different positive and negative attributes.
At least that's what I think, which is why I haven't made any actions on my thoughts.
Now if you want to go outside the box, and look at a Tri-Planar or Graham, I think you'd need to modify your VPI table to fit the new arm. That's too much effort for me.
Of course this would probably be a lateral move in the long run, as it may make some improvements while also offering it's own limitations or problems.
Different technology = different positive and negative attributes.
At least that's what I think, which is why I haven't made any actions on my thoughts.
Now if you want to go outside the box, and look at a Tri-Planar or Graham, I think you'd need to modify your VPI table to fit the new arm. That's too much effort for me.