Sorry, there is no rack mount module that features "all the effects that are in the xf?"

The Rev-X reverb and several of the algorithms can be found in the Yamaha SPX2000. However, many of the effect types were developed specifically for use in the synthesizers.

Since the XF features an A/D Input suitable for either a mono or stereo, mic or line level input, and you can assign a dual INSERTION EFFECT to this external Part, you can then route this signal with these effects in tact, to its own discreet output... So it is possible to print tracks to your favorite DAW software using the XF as your effect suite.
It is also possible in a "live" situation to use the Insert Effects on your external device, and route the A/D Input PART to the discreet analog assignable outputs... Or combine it to the system (main stereo) output.