Honestly, I think removing NoDrop tags are, generally, a good idea - it allows individuals to decide what's more important for them, time or credits. Though you may argue that it decreases the number of people participating in various activities, in the end it will balance out because at some point if there isn't enough of a particular item for sale, someone will farm it/people will participate.
Not to mention that it can only benefit the majority of people who have alts that can utilize the same item. Granted, we're not sure which items are affected, so who know what impact this NoDrop change will have.