I had a closer look at SampleRobot 6.
The GUI is far less cluttered than it used to be, more logically laid out, but basically it's the same.
However.... for some crazy reason, they've removed the "Instrument Copier" function.
Basically what you'd do here, is give it a text file with all your patch names, you'd tell it (for example) to sample patches 1-5, 6, 8, 9-12, 58, 64, and it would create all the projects for you with the patch names relating to those patch numbers.
The trick was, to combine all the non-looped patches into one set of projects, and then run the instrument copier again to do the same for all the looped patches.
You'd then select "Record All Projects" and it would automatically send the MIDI program changes, sample all the notes & velocity layers, and sort out any loops for all of your patches.
Without this function, it means manually creating and naming each project (i.e. 1 project per patch), as well as manually setting the MIDI program changes. You can still "Record All Projects", but creating them in the first place just got a whole lot harder.
Needless to say, I'm a bit miffed.
I've contacted the developer, but not heard back yet.
I'm just glad I've still got v4 and 5 installed.