I actually wasn't aware there were tweaks to the gameplay, but they sound good thus far. For those of you who've never played Puzzle Fighter, its a vintage game from the arcade/PSOne era (no idea where my copy went) that's been rereleased as a downloadable game for the PS3 and 360, and now includes online play previously only seen on the Japan-only Dreamcast version.
I like Sirlin's writing, and have read his stuff periodically since my Shoryuken.com days (aah), so its going to be interesting to me how his adjustments work, long term. They sound good in theory, but it remains to be seen how well those balancing tweaks survive the creative, competitive and utter ruthless player pool.
Oh, and he's offering his book online for free, but feel free to buy it too. I need to get my copy back from my friend @_@