Yeah, I get the “remove unnecessary packages” … I do that often, just because I don’t like Visual Studio Editor package being there, totally unused. 
However … [I’ve done some project stripping]( WebGL builds for mobile page-2#post-9021013) and removing like a dozen excess packages did practically nothing to build size (WebGL, release build). It wasn’t until I went into “Built-In” category and disabled unused modules (Cloth, Vehicles, Wind, etc.) that the build size decreased by a megabyte or so. If you go for minimal build size, removing unneeded Built-In modules seems to be far more effective than disabling packages, especially if they are editor-only (or: editor-mostly).