If diversity and inclusion is the agenda, then perhaps Autism Spectrum Disorder should be looked at again? Those with autism are a truly marginalised group within society, far more so than some dude with dreadlocks.
High functioning individuals diagnosed with ASD are a large potential talent pool for the RAF, particularly in technical trades and branches such as Intelligence and Cyber.
...and let's be honest, military aircrew are largely high functioning people. Who is to say that many aren't on the spectrum, themselves, but got through the bar to entry because they were not diagnosed?