Hi Bastien,

please find enclosed a patch which is my proposal for rounding
off this feature.

It introduces a variable, applies the check to org-delete-char
and org-delete-backward-char, and removes the (sit-for 1), 
and it never moves the cursor.

I have been unsing it for a day or two, and I like the `smart'
setting of the variable.  Even though, I do agree with your
earlier post that the default should be nil.

- Carsten