We can reference control to a parent (Like Parent.Width, .Height, .Fill, etc.). For the controls however we have to reference it by it's name. So when I have a control name 'Label1' I can reference it bij Label1.Width, .Height, . Color, .Fill, etc.
It should be a great idea to add a global reference to the control itself. Me comes in mind as a good name for this parameter. So Me.Width, .Height, .Fill, etc.
This parameter would make it faster to copy formula's from control to control or add a formula to multiple selected controls. An example:
Say I have ten controls (Control1,2,3,4,5,...) and I want them to be at the left off my screen. I can then select them all and just do the following formula on the X parameter:
Parent.Width - Me.Width
Current I must adjust the formula for each control like:
Parent.Width - Control1.Width // for the first control Parent.Width - Control2.Width // for the second control Parent.Width - Control3.Width // for the third control // and so on
This is time consuming because I have to copy/paste/adjust for each individual control.
So I would make a major time reduction to be able to do all ten controls in the same time.
This is provided with the self fx shown below.
Adding @FilipK from the Power Apps team in case there are any follow-up questions, since I don't see it in the formula reference doc here yet.