Yes, spamming the "over here" button is extremely annoying. I never do this myself, but I will press the button (edit: once, maybe twice) and call it out over the mic. Getting the doors just makes sense to me. I don't play this game for hours on end and do not have loads of promotions, sitting at around 17 constitution, 26 willpower, and 17 cunning. I gladly kill everything first, then open the doors or open the doors along the way depending on the competency of the group. Spamming over here may be kick worthy, but so is teleporting someone who is getting the treasure rooms right before they pick up the gold. Very rude.
In the end, a system that lets us group with like-minded people would be ideal. Fortunately, I've mostly found a good group to play with that feels the same. For those pugging times though, it would be great to select a specific lobby type or show them through a new icon of some sort. I want the XP too, but I'm not playing this game to grind. I want to have fun and the gold is part of it. How else am I going to afford chests to be disappointed in? 
Edit:
I prefer the more hopeful tone of this thread previously though, so...what could they do to improve the doors to entice people to get them more regularly? I've seen a lot of great ideas already. More XP and gold would be great of course, anything to take away a bit of the grind in the way these games are set up. Do you want challenges too? That way you could get more banners, titles, and portraits? Something like 250 doors for each type? That would be great in addition to the proposed treasure room guardian challenges for the Arcane Horror and Revenant. I'd love to see the frost Revenant from Jaws of Hakkon make an appearance as a stronger treasure room boss. It would mix up his gameplay a bit and make it more fun.