In SMBX 1.3 we could enable/disable auto-align in that position. Since SMBX 1.4.1, we have had the "Editor Settings" options there, but in SMBX 1.4.5 it was gone. That's why I thought this button, specially at this position, would be helpful for people strugglying to getting used to the UI.
This is how it would look when pressed:
(I wouldn't advice adding all the options SMBX 1.4.4 had in "Editor Settings", since now we have a tab for that. These features also were rarely used, and just would flood the user with quick access to options and he or she won't likely use.)
If this gets implement, Can you please remove these options from "Mode" tab?
Here's a zip with the icons: