The issue I have with most submissions is the level of investment they require in order to obtain the tap. Of course there are some that work with a small level of investment, but most require dominance or control in order to get the tap. In addition, the reliance on pain as a compliance factor which may or may not work.
IMO, it is PRIMARY to have dominance and/or control of the fight, so in a reality, I am looking for other things other than a submission. Dominance and control lead to hand cuffs or other types of immobilization. Other than that...chokes work. I have found no one that cannot be choked. Again though, the dilemma is the level of investment a choke requires.
Not saying these are not good things to explore...just that submissions and chokes and pain compliance are SECONDARY to control.
FWIW, I am a BJJ Brown Belt and teach Military Combatives...so that is where i am coming from as far as perspective as well.
Congrats on the bjj brown belt, that is quite an achievement. I just got my blue last weekend but I am now probably one of the worst blue best in the country