Adding guidelines (as in graphical design software) to improve final score layouts

Hello,
I'm progressively using MuseScore more and more in my "serious" projects.
The more I use it, the more I like it.
But there is one feature that would make me really happy:
having guidelines to help improve the final layout of the score (to better control spatial disposition of graphical elements).
By that I mean those floating guidelines (horizontal, vertical, diagonal) common in graphic design software (such as InkScape, that I use to create extra graphic notation for my scores).

Some desirable options:
1. Vertical, horizontal, diagonal guidelines;
2. Hide and unhide guidelines;
3. Enter guidelines both dragging with the mouse or with a precise numeric entry (120 mm, 400 px, 6.5", etc);
4. Optional snap objects to guidelines.

I have some background in graphic design, so I really know from my experience how guidelines are useful for overall better graphic results in any kind of layout. And this is a feature I miss since the first day I worked with notation software.
Even feeling MuseScore development not about competition, adding this feature would put MuseScore one step forward Finale and Sibelius, because as far as I know they don't have anything like it.

Thanks a lot,
Rodolfo

www.rodolfovalente.com