I'm admitedly not very brushed up on crisis theory though I believe its an ultraleft thing, and I tend to find a bit more curry with that marxian discourse then the vanguard type though they have their problems. It seems to me that you are part of that unfortunate tendency that wants to celebrate capitalist production. Your no different then the Negri types who've become fairly idiotic in that last few years. Ultimately this is hardly something to celebrate. To properly understand why you would probably have to leave the marxian centered field and look into some of the techno critics such as Mumford and Ellul.

I'm also quite aware of Marx's idea of the productive forces. I see it as one of the most tragic and contradictory aspecs of the discourse that spawned him. He fetishizes that so much that he excuses imperialism in India(albeit reluctantly)for this 'force' to grow. There's a point where he cuts strait to it and says "without the slavery of antiquity, no modern socialism". This type of teleology plagued the older Marx more then the yougn(who was less rigid and seemingly more libertarian). The Leninists took this tragic theory to an even more tragic practice. Lenin was convinced that Russia and all of Eastern Europe had to go from "wood to iron" no matter what. Never mind the fact that the largely peasant based society of that region tended toward more a more locally luddic, libertarian agency. Lenin only got as popular as he did because he lied before he took power(as many vanguards such as Castro do).

Interestingly the one thing I remember from Kapital v2 is when Marx makes the point that feudal relations were actually less harmfull to communal relationships then capitalist relations were, the accumulations not being the same of course. The recent example of the South Central farmers shows what your lovely productive forces does in practice. Feudalism would tends to be far less bitchy for that type of agency(not that I care for it of course).