I'm gonna go ahead and disagree with you for the very simple reason, there is no need to give this Wally West a chance, because he's not Wally West.
Race change for diversity sake is one thing (And not something I endorse), but the fact of the matter is, that the character presented to us in these few issues is very simply not Wally West. Sure you can argue that the fact he was White and Ginger was not part of his definitive make-up as a Character, but he's not some law breaking, cliched disrespectful punk as has been presented. Wally West was a Middle Class-Mid West kinda guy, a paragon, and he loved being the Flash and everything it stood for. He was light hearted, and sure impatient at times, but undoubtedly selfless.
This 'Wally' doesn't seem like any of those things, and so whilst I'll read on, just to see home much more they're gonna mutilate him, I still don't see the point of him having to be 'Wally West'.