[PCheese]

Really? If you want these plugins, just do the one-time install when you first encounter the Missing Plug-In message, and then everything will "just work" again. (Well, perhaps you'll have worse battery life and maybe a less secure system.) There's a reason why that error message has a button next to it that makes it really easy to install the missing piece, as opposed to hunting for the right software on the Internet.

Can you be more specific about needing to "manually futz around with flash every two weeks"? I'm guessing you mean software updates, but I have a hard time believing that Flash stops working unless you update it. If you don't value the added security of having Flash updates decoupled from OS X releases, then you can just tell Flash to stop prompting you to update (or better, just tell it to do so automatically).