Whether it's worth it or not is still a question. LSA are relatively slow and simple airplanes and daytime, VFR only for Sport Pilots and those exercising Sport Pilot privileges and limitations. They can't be used in furtherance of a business, so it's mostly just fun flying. It seems a lot of us are older guys with an endurance of about 2 hours before we need a break.
The turbo-charged engine is a benefit flying faster at higher altitudes, but probably of little to no value flying at low altitudes. For lowlanders, flying with no wind or a tail wind, it would probably be worth-while to climb to higher altitudes to take advantage of the turbo-charged performance and thin air, even for just a 2 hour flight. With a head wind, most would probably stay at a low altitude since winds are usually stronger (but not always) at higher altitudes.
The turbo-charged engine would benefit highlanders almost every flight since they are usually flying at higher altitudes regardless of the wind.
Bottom line, it would depend on the cost. I doubt it would be cost effective unless you live and fly in higher elevations or you have nothing better to do with your money. Obviously, there are exceptions to this generalization.
Commercial Pilot Airplane Single & Multiengine Land; Instrument Airplane; Sport Endorsement Airplane Single Engine Sea; Flight Instructor Airplane Single And Multiengine; Ground Instructor Advanced Instrument