This experiment shows we can win some startup performance on applications that generate java.lang.invoke.BoundMethodHandle$Species* classes:

http://cr.openjdk.java.net/~redestad/scratch/bmh_species_gen.txt

I believe it's an OK start to generate a default list of species types picked from this simple experiment for now, and consider using a profile-driven approach to generate the list of species classes used at build time.