EDIT:
So my conclusion is, probably it was the wrong algo right from the start that allowed effective cpu/gpu mining.
Why don't you join the litecoin project then (if its still alive) ?
It's a dead end but it makes more sense for you than to hope for the change you are suggesting.
Since we know BIPs (Bitcoin Improvement Proposals), maybe it's time to start reviewing BDP (Bitcoin Deterioration Proposals).