Oh cool! DesertFroggo posted Framework Desktop with front panel snap-on display | /r/framework with model files for 3D printing at Front Panel Monitor System for Framework Desktop by DesertFroggo | Download free STL model | Printables.com . I gave that a try and the off-the-shelf components were certainly quicker to set up than DIY electronics 
I still like the idea of being able to mix static tiles with dynamic tiles and keep the whole front panel thinner as the group over at OSHE Desktop Display Progress Update has been doing. This display and the brackets together stick out about 25mm.