Hello!
I think this my feature request is in order to see Gdevelop more standardized. There is no big impact on change, but I think it still have a little impact.
Doing my game I realized that if we click in an action or condition to change something like in the screenshoot below it already shows all content selected:
But the same thing is not true when we try to change the “special events”, like For each object, Repeat, For each child variable:
I only noticed this difference because while I was testing my game using preview and making some changing in the code I put the wrong value in a Repeat event and I just noticed it during the preview. 
Thanks.