I finished installing a simple mirror/backup cam on my 2012 SV (http://a.co/i1Moj7j) for $30 and love it. It is a huge improvement for me to be able to see while backing up. I wound up just powering it into a cig adapter. The only feature that I miss while driving it vs my 16 Civic is the side view camera that pops up when you turn on your turn signals.
It got me thinking. There's lots of room to put a small 4.3" lcd/tft screen by the passenger window (by the funky front window thing) and attach a small camera underneath the side view mirror and have a fulltime blindspot monitoring system.
Anybody try this or consider trying it?