Except they havent really - except Read I would say. And even then I wouldnt agree. Notts have a benefactor and money (which is why they always beat Warwicks, who ae just as bad for players) and tend to sign players ready made from elsewhere ( I think they won the CC a few years back without single home grown player). I dont have a problem with that - but have a slight one with taking praise for English qualifieds and "dissing" Kolpaks - when all your English qualifieds are nicked from elsewhere - and the teams you nick them from then have to get Kolpaks to replace them.
Id bet Leicestershire have produced more internationals than Notts over the last 10 years. They all leave. Leics get Kolpaks to replace them. IMO Leics have still done the better job in producing test players.