My goal after switching back to Ryu from Rig was to work on using those very 2 things, and I have. I'm using Izuna holds and the ongyoin one more, and my izuna hold execution has improved. I might just need to learn how to not be an idiot with my holds and learn to block low... I don't know
Other than that, you'd have to ask someone else. Defense is my weakest point.