Thanks for the reply and for offering to pass this feedback on. As I mentioned, seeing as the OP is over two years old, it certainly doesn’t seem like the mechanism for “passing feedback on” is all that effective. 
Also not sure why the link you provided goes to tax setup information for Japan?
FWIW I have [another post](http://Excise%20Tax Not Applied https://community.shopify.com/post/2466417) regarding a related issue where I’ve been unable to get excise tax to apply at checkout despite configuring the correct product taxonomy for my store. Would be happy to share details / access on that thread. I ended up going with a tax override and just configuring a combined amount of tax for CA sales and excise tax. Not ideal, but I was not getting support. BTW I have signed up as a partner, is there any better support available for partners? Dumping questions into the community boards and hoping someone replies is not exactly encouraging either.