Same size thumbnails

I see in some apps like Facebook and some joomla extentiins one can set all auto thumbnails to be created in same orientation. In other words photos are cropped so that all thumbnails are eg landscape, giving the thumbnail gallery a far neater look. Is this a feature that can be added by changing code or maybe add an event. Or perhaps a Plugin or somethig. If it needs to be a feature to be built into phprunner. I would love to see it coming

Any comments or ideas on this?