Monitor - to mirror or not to mirror?

[Marsupial]

For the completion of my cab conversion, I am faced with a design decision. I have a 21"CRT VGA monitor that will be hooked up to the MAME computer, and it weights a ton.

The cab I am converting had an angled mirror reflecting an up-facing monitor (that was absent from the gutted cab when I got it.)
I still have the mirror (intact) and what it takes to put it back in the cab (rails and all)

I wonder if its worthed to do that, as opposed to make some shelf to hold the monitor, either straight-up or slanted back a la nintendo cab?



From my reading here, people generally don't do mirrors, but mainly because the possibility isn't there.... I do have the possibility. Is it a good idea? Is it a silly thought of me?

I think the upward-facing monitor is great to lower the center of gravity of the cabinet and hide any inner bezel. Maybe I am wrong...

Is there anything I oversaw? What's the official say on this matter?

Thanks for opinion, suggestions, comments.

[Marsupial]

Bump with additionnal question.
Is there a way to "mirror" (as opposed to rotate) the whole screen under windows XP?
I've seen software to rotate the screen, but none makes mirrored images 

[newmanfamilyvlogs]

Hardware solution?

Essentially flip the polarity on the coil.