Top work, Solarsplace. This has become my default base style since it was revealed by the Fleet 5 back in February, and it's great to see it presented in an clear and easy to follow format.
My only (slight) variation on the theme is to add the whole spices after the blending stage and let the base tick over for 45 mins or so, rather than make an akhni stock. Having tried both methods (akhni stock and adding whole spices at the end) I've found the end results to be the same - plus you get the added bonus of occasionally crunching on a whole cardamom, piece of star anise or bit of cassia bark in the final dish.
Adds an element of surprise, texture and flavour hit to your curries!