I don't do any "weird spam" either... and the only time I remove spells is when I've had to backup heal and "Oh hey.. I'm at 10% Force now... time to do something about that".
For the Hybrid (and full Madness) builds, where we Force Lightning is where a Lightning spec uses Lightning Strike - it's just a filler. What I was saying is that since in those two specs Force Lightning actually gives you Force, you can spam it for an always positive gain... but unless you're backup healing and spending way more Force than a normal "rotation", you won't ever need to. Even with Subversion (increases Force regen to 10.4/s at 3 stacks, which is probably rounded down to 10), Lightning Strike is still Force negative. It goes positive (I think) with a Lightning Effusion proc and if you take the Electric Induction talent... but it's by no means as big a Force gain as, or as consistent, as Force Lighting is for the Hybrid and Madness builds.
Lightning will run out of Force eventually, and you will have just smack things with your saber while you wait for regen since Lightning Strike spam is rarely positive. When this is, I have no idea because we don't have training dummies or dual spec yet for me to play around with it.