The problem with the Meldonium ban has all been a matter of timing and publicity. It hurts the cause of anti-doping when the rules look unfair or when it appears that rules can be sprung on athletes without fair notice.
To be fair to athletes, WADA needs a policy that bans of specific drugs start no sooner than 6 months from WADA's announcement of the ban, and there needs to be greater publicity. So in this case, instead of announcing on 9/16/15 that a ban would start 1/1/16, WADA should have started the ban on 3/1/16, and begun a greater publicity effort.
This would only apply to drugs like Meldonium that fall in a category where only specifically identified drugs are banned (in the case of Meldonium, "hormone and metabolic modulators"). For drugs that fall into categories that are entirely banned, like anabolic agents, these drugs are already banned even if a specific drug hasn't been identified by WADA.
To be fair to the dopers!? These losers are taking drugs to enhance performance! The ONLY concern should be what is fair to the athletes not misusing prescription drugs. What is fair is an immediate ban once the intent of doping is found. The fact that they were even given 3 months notice is BS and not needed. You make it sound like these cheating scoundrels are some sort of victim in this situation.