Speaking of all this board stuff... I have 3 boards (7.5v buffered GI mini boards) I need to order tomorrow. One is pretty much dead and the other two are flaky. At least I'm still under warranty .
Would I buy an upgrade kit? Depends on price. It's certainly not a project that at all intimiades me, in fact I think it would be fun to install. For me, at this point in time it wouldn't because I feel like it's in any way needed on my machine as other than a few of my GI boards all has been peachy... just would be fun.
I seem to recall that the WOZ 1.x boards use an RGB controller that has been discontinued, which even today could make building more 1.x boards more of a challenge (or maybe there still a warehouse in china with a billion of them in bins). Anyway, I'm assuming/hoping that the 2.0 boards have replaced that component with a part that is currently being actively manufactured. Further I hope that when they do get discontinued (as what seems to happen with greater frequency these days), there be a direct replacement made available.
The problem is that in todays world of putting disposable electronics in just about everything, I don't know if any of these manufactures would have any incintive to continue making these components for our pins after everyone starts using the next latest greatest RGB chip in their color changing ice cubes, cotton candy sticks and whatever else. Conversly if it was a part manufactured just for pinball instead of something that gets put into just about everything, they would cost a fortune.