IS inspection, although being professional regarding image quality failed with "The following keywords used for this file do not appear to be fully relevant to the subject". Recently they remove few most relevant keywords from 3d illustration.

Level 2. Therefore, unfortunately, I have to remove most unique images from my small 600+ portfolio on 123rf: I anticipate the increased sales of these images on other sites.

With 50% royalty rate I have 0.87$ sales of P(print -sized) images. Even now it is the lowest rate in industry. With 35% I will get ~0.61$!! 0.25$ subscription is insulting too.

123rf has most attractive upload system and friendly team, therefore it would be pity to leave it.

You are missing the whole point here, it is according to them not about commission but about retail price. I doubt if there are many agencies left with much lower commission than Fotolia, seeing they are the big driver behind the contributor earnings demise.

Indeed, for me (as contributor) neither the retail price, nor % of commission doesn't matter. The only important thing is $$ per download of image of a certain size and license. From this point of view, fotolia is somewhere in the middle with average high-res commission and one of the lowest subs and web size commissions (in the case of my ranking). 
Nevertheless, I agree that the only reason to start with new agencies for me was the fotolia's (and IS) severe commissions cut.