Its good to see article like this. Many just don't realise that drug boost usage may result in serious damage. So far the best brain booster is healthy lifestyle and practice.
I'm not sure I'd refer to psychostimulants as nootropics, although I'm aware many people do. The neurological tradeoffs involved in catecholamine reuptake inhibition are relatively well-known and uncontroversial; to me, much more interesting are the implications of long-term racetam use. History (and homostasis) seems to indicate that there are probably tradeoffs involved, and the fact that we have no idea what they are makes me more than a little nervous.
The tradeoff between 'performance' and 'plasticity' is an interesting framework. One with larger ramifications later in life. It's also one that vexes the "education" industry, and has broadeer applicability outside the realm of the discussed paper. Definitely an interesting topic.