I agree with your assessment of the Sony LCD rear projection. I just purchased the Grand Wega 55" and made the decision to buy after comparing to Samsung, Toshiba, Panasonic, Sharp and Pioneer.
The Pioneer Plasma was first choice ($11,000.00) and the Sharp direct view LCD was second choice ($7000.00) but at $2600.00 the Sony was close enough for a guy like myself that prefers to listen to music.
I was attracted to your system when I read "shared with a toddler." When my son was barely tall enough to reach my turntable, I taught him how to cue up an LP. The look on his face was PRICELESS when the music burst out. I still have an old Polaroid of one of those music sessions with him and it's among my favorite photographs.
Teaching your baby boy how to use the equipment now means he will respect it later. Best of all, when he's grown and in college like mine he will sit with you as an adult and listen (especially if you can accept his music years from now).
Great topic, thanks for sharing.