I'd imagine after a year of updates it would be the perfect time to give it another spin. Not saying it's any better but to negate something entirely because of a bad experience over a year ago is a little over the top IMO.
Don't think the `:not` tip is good. You're adding 1 more level specificity to all of nav items except the last one as opposed to that 1 level to just the last one. Makes it a bit more annoying to overwrite when it comes to it.