Plane Sailing
Astral Admin - Mwahahaha!
In my OGL game (may it see the light of day soon!) I went for a 'two actions every round' model, where a single action might be move, strike, parry, snapshot, get up. There were also 'double actions' which required you to take two actions together on the same round to make it happen - aimed shot, mighty blow, flying tackle, sprint. This has been working very well for me, there isn't an emphasis on breaking things down further, the simplicity of having nothing below 'action' keeps it pretty clean and simple. Someone in melee might choose to make two strikes, but he probably won't want to do that (or take a mighty blow) unless his foe is discombobulated for some reason, so there is a tendency towards caution...