Sorting columns with Sort helps a little with window management. Also, the "Edit X" sam command does something similar to lw.

On Wed, Sep 2, 2015 at 4:19 AM Rudolf Sykora <rudolf.sykora@gmail.com> wrote:
On 2 September 2015 at 11:54, Mathieu Lonjaret
> I got annoyed at how, usually with many windows open, I sometimes struggle
> to find where one of my windows is.

yes. when there are many windows, the situation gets chaotic,
that's my experience, too.

Further, the heuristics of placing new windows does not really help
at that moment :(

btw. Has somebody tried this?
http://c9x.me/edit/

Ruda