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Well, the basic strategy for Blackjack is still slightly in favour of the house

But yeah, you might track cards (good luck doing that with 10 decks though)

Most blackjack card counting strategies are no more difficult with a higher number of decks. Instead of counting actual 'cards', one instead keeps a running total of points based on the cards that come out.

In fact a higher number of decks can improve one's advantage when counting because when the count turns in your favor it can happen with more of the deck left to come (so a longer period of advantageous play)

http://en.wikipedia.org/wiki/Card_counting

This is incorrect, the larger the number of decks, as a general rule, the smaller the advantage of card counting becomes.

If you're counting in a (rare) two-deck game with a full table, time between shuffles is so low that it isn't worth it from a hand/hour standpoint.

That's nonsensical. The EV of an hour would depend far more on the table limit than any other factor. If I could find a table that would let me vary the bet from $1 to $10,000 a hand on a two deck game they could have Parkinson's patients with oven mitts on shuffling with chopsticks for all I care.

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