Bookmarkers are fantastic, whether from tgps or LLs - the one advantage that LLs have over the TGPs (in most cases) is that so many TGPs run cj's/traffic trades which will piss a potential bookmarker off
The idea about no warning page would be ok as long as you also agree that the biz model for LLs should change to paid placement/submits just as the tgps have