I too have passed you over when looking for game specific banners.
Some pages do promos and some do games. I wouldn’t put a promo banner on a games page – it won’t bring the type player I want from there.
You should always leave the game specific banners up.
It allows for affs to address their particular player niche. You don’t want all affs to carry the same banners – you will lose placement over that, too much competition. We need to be able to adress our niches…
Simplifying is great, reducing selection is not.
Customized banners or banners on demand are great when one is designing a new site or page, but not practical in the middle of an update. We just go to a place that has them then.