Those are good ones.
Don't recall when, but sometime after Core Console was introduced, I know that Autodesk.AutoCAD.Internal.Utils.WcMatch() was moved to Autodesk.AutoCAD.Internal.CoreUtils.WcMatch().
Autodesk also deprecated Autodesk.AutoCAD.Internal.Utils.GetAcadResourceIcon(), when they should have enhanced it - originally it searched Acad CUI for resource icons only, and completely ignored vertical-specific icons, so I ended up having to write an extension method that iterates whatever Main & Enterprise CUI were, but don't think I ever finished it to also iterate any attached partials - would love it if Autodesk would do so in ARX.