I posted some information in this thread about the probe and ets used on the 1500. Neither I, nor anyone at Tormach has confirmed my ID of the probe and ETS but I’m fairly confident I have it right. In theory, one could splice the wired toolsetter and probe into the machine’s I/O for the wireless transceiver using the documentation I linked to. However, you’d need a way to detect the wake up signal from the machine and provide an appropriate ready response back. This would be relatively trivial with an arduino or raspberry pi if you’re into such things.
Were it me, I’d probably just go with an 1100 which is still likely to require that you alter the connector on both of your devices, or sell off your old equipment to help finance the new machine.
FWIW, I do almost exclusively one offs and prototypes in my 1100MX and while the ETS has definitely saved me a lot of time, after 6 years of ownership, I still don’t have a probe, just a haimer (and an edge finder in my recently acquired 440). Sure, I’d love to get a probe someday as I know it will speed things up a bit, but the haimer works just fine and has been for a long time now. Point is, both devices are niceties, not requirements. Another way to look at it is, 50k is already a substantial investment on something that you have described as a novelty. At that point, does another 5k really make that much of a difference, and if so, perhaps a different machine (like the 1100mx) would be a better fit?