Umm, the fact that our new undersized frontcourt (Skinner, Williamson, Thomas) consists of three guys who all happen to be black is not the problem. The problem is that they are undersized. They are also three guys providing more than their fair share of 'defense and heart' as you put it, so it's not like they're the whole problem. You can't blame them for being short. It's not their weakness as players that is hurting the team (all have been playing excellent ball for guys with their particular physical talents), it's the weakness of how the team is constructed. All of them individually are fantastic guys to have on a roster. But the roster as a whole lacks frontcourt size. You can't really blame Petrie for having a faulty roster when the thing was practically slapped together on the fly. It is what it is for now, and hopefully it will get better in the near future.
I suspect you were only using the term 'black players' as a description (and you're right, upon close inspection, all are evidently black) - but by doing so you risk confusing the issue by suggesting (unintentionally?) that their, umm, 'blackness' as it were, is a part of the problem. Clearly you know that not to be so, I hope.
As for Mobley, calling him useless is pretty unfair. The guy practically carried us in the end of game 1, and it certainly wasn't the first time he's done so since becoming a King. I've already written elsewhere what I see to be his limitations (defensive liability - due mostly to lack of size and speed, not effort or 'heart'; and unfamiliarity with a 'passing' offense - he played with Stevie Franchise for years). One of those weaknesses isn't going to get any better, because it's related to his physical qualities, but the other quite possibly could.
And while I agree that this team with Webber (who always steps it up in the playoffs, despite what his reputation may be) and Christie (assuming he were still playing at this point in the season) and even Vlade (if we go way back) would have had a good shot at carving up this postseason like a Thanksgiving turkey, I don't think it's fair at all to refer to Skinner, Thomas, and Williamson as "some undersized scrubs". I may have used the term myself in an emotional outburst or two when the trade, as they say, 'went down' but since then the three of them have changed my mind. Nobody who puts up a double-double in this league, and then goes out there the next night and does it again, should be considered a scrub. Especially not when you throw in a handful of steals, blocks, and assists to go with it. I should reiterate that the roster as it now stands is not ideal, but that doesn't make it a bad trade for the future and it certainly doesn't justify your calling these guys scrubs when what they actually are is solid role-players, a commodity championship teams accumulate in surplus.
And one last note, scoring may not have been a problem with Webber still on the team (which I might add is far from a forgone conclusion), but Ray Allen going for 45 still would have been. Considering the see-saw effect of shooting percentages, I think that actually looms as a bigger problem than the shots not dropping for 24 minutes. But I may be wrong about that, I wasn't able to watch games 3 and 4.
EDIT: Well then. With the post removed, none of this makes much sense does it? A for effort maybe?