I agree with the idea, but there's room for a coordinated effort nonetheless. From a naming consistency standpoint on strpos vs str_replace, for example, we could have a new set of function names aliased to the old, and let those run in parallel for a while, with deprecation notices on use of the old ones. Ugly? Perhaps, but it's a way forward to standardize the internal function naming without breaking BC overnight.
Not quite for the same reasons it seems. But, since they already do do this, why not take on standardizing function spacing? strpos would become str_pos, etc.
