My view on it would be no,
I generally have to farm all my comps as any time I have to get comps with this population ammount they are few and far between. Increase the playebase double, sure. Readd the drops that no longer drop.... or remove that which use them. Right now, a crutch she may be, but it's more a crutch for those who cant go get the comps themselves and no one has any to sell. It's extreeeemly expensive, however expensive is better then going without if it's something you need.
If you feel Nadia needs removed, try to get the playerbase up so this market style will work >_>
As for Nadia on blight.. When I want to test out scale setups I generally go there and make them before going farming on live.... saves alot of time making scales I dont like..
Basically... Nadia is that player that you know has the comps you need, but is soooo greedy you refuse to go get it from them untill you exhaust all other means to aquire them or you have so much coin that you no longer care about price >_>
Soraii