I think the dynamite plan is too simple in nature, and probably not as effective for the long term damage inflicted on the enemy. Yeah it makes a nice big "BOOM" sound, and maybe a few of the others will get blown to smitherines, but overall it will do nothing. This is where I get irritated with the Jack dynamic. Why did he keep such a huge undertaking a secret until he was outed? Why wasn't Sayid brought into this from the beginning? He is the only one who has really been a warrior of this type, and he would have a lot of needed knowledge to add to the planning and execution. If it were me, I would have taken this battle to the "Others"..... hit them on their own soil unexpectedly. Specifically target their leaders (ben, richard,) and either capture them or kill them. Once you hit them like that it would throw them into chaos and keep them from coming after you in the middle of the night. I think you are right, this will change everything...just as the promo promises.