agreed.IMO the best way to catch people is direct testing for substances.
The means are there (see e.g. Brazilian cyclist caught for 14 substances pre-Rio), but (imo deliberately) not being exploited by UCI and the ADAs.
Interesting point about retics and flumicil.
Iinm, oldschool steroids boost hematocrit, too. I wonder if this means riders who use steroids during the season have to take steroids in the off-season too, so as not to trigger the passport.
As for riders being more careful with EPO, don't forget that according to some there are literally dozens of undetectable EPO variants on the market.
http://www.reuters.com/article/doping-epo-idUSL4E8EF70520120315