FWIW, I’ve noticed there are some clearly happy Toolbox users out there. There are also some really unhappy ones. The happy ones seem content with what it offers, and the unhappy ones feel it hasn’t been updated aggressively enough, that it’s unfinished, and/or abandoned. I recommend reading the threads in the 1010music forum and MW carefully, to see if you can construct a perspective.
Much of the uncertainty and doubt is the direct result of 1010’s poor (I’ll say it) marketing. The case for Toolbox was just never put out there forcefully in the first place, and while they’ve updated the firmware, they never followed through on showing it off. It seems to me that they treat it more as an accessory to their other modules than as a standalone product, and I think it’s pretty obvious that those four MIDI outputs are first and foremost there for connecting other *box modules.