I'm currently concentrating on three pretty basic open guard passes, each with a 'plan B':
1a. Knee-drop from combat base (pin same-side leg with knee). Get head control and back-step/switch hooks to pass. 1b. If unable to get head control, or if opponent pushes knee, take underhook and come inside with other knee to cut across.
2a. Pin opponent's shin with opposite shin (alternatively, pinch his calf in half guard) and underhook other leg. Cross body with head, control bottom knee and pursue over/under pass. 2b. If opponent stiff-arms head or hip to stop the pass, get up on toes and smash-pass to other side, bringing chest to opponent's chest.
3a. Leg weave/leg hug pass. 3b. Switch sides as opponent blocks head.