LX600 guy here (2024), looking to upgrade to the 700h early next year. Really want the triple-locked OT trim. That being said, I was initially building the 600 (mentioning the 600 here, as I believe it is similar enough to match most kit designed for the 700h) out for moderate off-roading and it was impossible to source any substantial off-road gear from anyone but CBI/Prinsu or Dissent.
Dissent has a great product in theory, but the fact that:
a) you have to drive or ship your vehicle for them for installation
b) they have no prices listed on website
c) they have no snorkel solution details on their site
d) they have no hatch ladder solution
honestly takes them out of the running as far as vendors go for me.... leaving CBI as the only (real/non-vaporware) option as far as I can see.
I think the development/supply for 600/700h gear will be slow unfortunately, mostly due to the relatively low number of units of these vehicles on the road (and even smaller customer base who are interested in doing any type of off-roading)... I'm keeping my fingers crossed along with you, however. Perhaps with the 600/700h consumers combined demanding more off-road options, it may be worth it for more vendors to jump in (or have the vendors currently making gear expand offering selections)...
I've got roof rack and side panels (and a bunch of attachable gear), will be purchasing steel front and rear skid plates (all from CBI) and plan on swapping these over to the 700h when I get it. Still looking for rear hatch ladder and snorkel solution for the 600/700h. I'm even looking overseas (Australia, Dubai, etc), and can't find anything...