"Self" or "This" variable that references the current PowerApps element. Would allow formulas such as the following, for example:
Instead of requiring the user to reference the current element with a fully qualified name:
This would allow users to re-use code and apply code changes across multiple elements simultaneously without having to modify them individually.
This (sorry) may be confusing in a mature app where everybody has been used to doing all of this long-hand. It would be a great help when writing code to implement things such as colour settings and positioning visual components relative to each other.