My primary reason for 2 OTs was using one as a pickup machine and the other as a regular flex/static OT. (Actually my initial reason for two was to have 8 outputs like one would assume you’d have with an 8 track sampler, but that’s another rant…)
Unfortunately, if an OT pickup machine is slaved to an external clock, Timestretch doesn’t work and you also drop out of overdub.
So if you don’t use overdubbing in your Pickup machine setups then it won’t matter to you. If you had visions of 2 OTs doing a Frippertronics kind of thing, you’re probably out of luck.
The benefit of 2 OTs is more individual outputs for external processing. You can also cross-couple them by routing the Cue outputs of one to the AB inputs of the other and vice-versa. It’s kind of similar to using one Flex machine to record the output of another track/cue/main, but you have an entire 2nd machine’s worth of tracks and processing available (as well as 2 track 8/Master tracks for processing).
The stuff you can get out of an OT is mindblowing with just about any type of input material. A thorough review and update to the codebase would make the machine completely unreal.