The subjunctive mood is dying pretty quickly, along with "whom" and "shall". "If X was" is already used quite commonly in hypothetical constructs, even among native english speakers. Yes, technically, "if X was" is a question about X's past, not a supposition about X's future, but english is "as she is spoke" :)
Another generation or two, and it'll be gone. No use crying over linguistic evolution. Static languages belong in the dustbin of history, and that's where they eventually end up.
As High Lord of the English Language, I'll allow the use of past tense here.
