Constance was the one addition to Mansion that really ruined an otherwise solid attraction overhaul for me. Not only is she a huge step down conceptually from her legitimately menacing predecessors (the blacked out face with glowing lights for eyes was extremely creepy), but the projection effects somehow look vastly worse than the other multiple decades older facial projections used elsewhere in the ride.
As i've said multiple times before, one of the most glaring reasons it looks as bad as it does is due to the fact that the face surface appears to be flat. Leota and the singing busts have actual physical features such as noses, cheeks, eye sockets, ears and even subtle lip shapes. This gives the projection a 3-dimensional surface to adhere to and make them look much more realistic.
From what I can tell, Constance's head lacks any of these details. On top of this, i'm guessing the veil also probably negatively impacts the projection as well, since it appears to be a front projection instead of internal. I believe Leota by comparison was made internal when she began levitating. Constance looks awkwardly flat at every single angle, even straight on doesn't look correct. It also doesn't help that they try to project moving hands and an axe onto the torso, which also looks stupid (even if the basic concept itself wasn't already terrible).
I actually like the portraits. I never liked the obnoxiously loud noises and silliness of the old popup ghosts and find the portraits a more subtly creepy effect. As for their light requirements, would something like a rear projection (or perhaps even very dimly lit OLED screens) help with potential light spillage into the environment? Still, i'd be fine with the portraits leaving, especially if it meant we'd get something closer to the old darker bride back again.