BJJ submissions will always be the dominate SUBMISSION part of MMA and with good reason.
BJJ subs are to Judo subs what chess is to checkers.
Sorry.
That said, very few things can end a fight like a good throw that lands someone on their head or knocks the air out of them.
That said, judokas MUST train no-gi for that and while more or, to be honest,m if you are a high level judoka you think Olympics, not MMA.
Now, AFTER the Olympics or if the Olympics don't work out you can always fall back on MMA ( after taking up MT or what not).
Psalms 144:1
Praise be my Lord my Rock,
He trains my hands for war, my fingers for battle !