just asking for a basic square and cube brush mode for the cf sprayer. not sure why there are not more brush modes already but it is really grating on me. the scaffolding idea is neat for reinforced stone but for regular cf construction it doubles the work and doesn't add any benefit aside from shaping each spray however due to the random arbitrary limits on how scaffold blocks can be placed and the fact that you have to essentially frame the whole structure and than spray over it, the entire system is deeply flawed and one would be better off just using a filler with stone or concrete. but more brush sizes and shapes for the CF sprayer would make it 100% more viable than it currently is.
Additionally you may want to consider some method of gravity based filling that allows you to pump liquid CF into an area and have it expand and fill it.