Support inside a [-shaped section of a model can be really hard to remove unless you waste material on expansion and support-walls.
Factor 1: To ensure quality of support for small support areas its well printed and thus strong, for a large support area that’s problematic,
Factor 2: If you enable expansion it becomes intrusive forcing you to use blockers ( see https://www.kfs.org/oliver/Spindle_Support.3mf )
Factor 3: The amount of support material and print time can be wasteful, while tree-supports seem poorly suited to wide-area support.
There are several things I think we could use options to improve this experience with:
1- Conic/pyramidal supports: If you are trying to support a large area from the print bed or from an earlier layer, using conic/pyramidal supports would allow a) easier removal (easier to gain access at the base of the supports), b) reduced print time/waste,
2- “Soften support” option that varies the temperature, line width and height of support towards the center so that during removal it is significantly easier to break the support than it is to break the material being supported,
3- “Weave” - when interface is enabled, displace support lines along x/y slightly from central alignment, giving it a woven-like appearance when zoomed in a little, reducing the strength of its layers to shearing force without disabling its vertical support capability.