I can left-align the headers, yeah. As for constructors and center alignment…we’ll see. I don’t have a lot of control over the styling of the collapse toggle (or where it goes in the DOM); the toggle would have to be moved out of the table (maybe into the header). I’ll take a look later today.
Edit: Both of these changes are live. The collapse toggle is now to the far right of the Quick Reference header (not inside the table itself), and the second row of headers are now left-aligned.