If it acts the way I think it will, I find would it annoying because it takes a while for the large thread page images all to load, and then the posts hop around like a very badly designed CSS page loading a pile of ads until it’s all done and all the images have loaded. Impossible to try and start reading until all the jumping around is done.
I’ve noticed this behavior already on some threads where full-size images seem to appear without needing to click the thumbnail.