So this is a multi faceted thing, but I notice 2 things when proposing to clients. Clients cant opt out of technology in a debatable area unless I remove that area myself from the proposal, or put an option with a custom item that says opt out. Secondly, if I want to give options, but don't want those to show in the overall price unless they choose to see them, I have to put in that option with opt out custom item that has $0 value so it doesn't calculate.
I would also like to be able to hide costs, and/or let clients hide/view the cost of a certain area in the total.