Inconsistent displacements of code lines

[rubenbarroso]

This might be hard to implement, but I think it would be nice to be able to move variable declarations within a let in a structural, not textual way. Let me explain better. If I have the following code:

(let* ((numbers '(3 -2 1 six -5))
       (six 6))

And I select the declaration '(six 6)', maybe using the outstanding cmd-W shortcut, I would like to move to the first position in the list of let declarations, as in:

(let* ((six 6)
       (numbers '(3 -2 1 six -5)))

So my code is valid. Normally, this is accomplished using the combination cmd-shift-up/down. Alas, this is not context-aware, and it leaves the expression looking really ugly:

        (six 6))
 (let* ((numbers '(3 -2 1 six -5))

We could think of additional scenarios that might benefit from this type of structural changes.