Probably pointless though.
A quick snoop in Opera's Mini forum reveals that Mini lacks Flash support.
So that's the one killer feature that might entice the faithful to ditch Safari for something else missing then. As a result, any shenanigans over Mini's acceptance by the Apple store will be a storm in a teacup, as nobody'll* bloody want it anyway.
*Or perishingly close to nobody anyway. I'm assuming that the subset of Apple fanbois who are also Opera fanbois is a fairly small number of people in the greater scheme of things.