The next biggest issue for me is the turtle. Judo guys go for this all the time and in shiai (competition) this would likely cause the referee to call a stand up. Not good for me. So I need to work out some effective anti-turtle manoeuvres.
I have noticed that I tend to leave my arm out when being thrown, which could be disastrous against a good juji-gatame (arm bar) expert. To counter this, I need to let go of my opponent's gi and improve my ukemi (breakfalling).
Finally, I am finding that people stand up when I catch them in sankaku-jime (triangle choke). My conditioned response to this is to hook the leg; however, I am informed that the ref will again call a stand up if this happens.