Lenin is very far from the be-all and end-all of the matter. His theory was criticised by many Marxists of that era, including Luxembrug, Pannekoek, Rühle and others (those are all from his left, of course; criticism from his right was generally tedious and long-irrelevant); it's apparent hegemony among Marxists is a product of historical circumstances rather than because it uniformly constitutes any sort of inarguably logical conclusion to Marxism. Take what he says with a pinch of salt.
I'm not really sure what point you're making here, or how it contradicts Marx's theories on the matter. He certainly didn't think that there was any sort incompatibility between a collective class conciousness and what you call "individual conciousness", and in fact seemed to regard capitalism individualism as a necessary precursor of advanced communism, which he in no sense regarded as primitivist return to tribal or quasi-tribal forms of social organisation.
Well, the assumption that you're making here is that the perception of work in capitalist society, as an individual input-output equation, is intrinsic to human production, which I don't think is actually the case. In primitive communitarian societies, production is understood as a social process, something which the band undertakes collectively- even when labour is divided between different individuals- so the input-output equation is also taken collectively. Communism, in reconstituting the social relations of production and thus society as a whole, would revive this collective understanding of production, and so cannot be approached with assumptions made within the terms of capitalist society.