I suspect this is old news, but for the record someone got the (admittedly quite) bright idea of using BoE gear to make unstoppable 101 twinks. You can see the results for yourselves here.
I speculated that such a DPS class (especially burst-heavy ones like fire mages) would reach ridiculous levels with runaway secondaries and legendary ring, but I only have 1 mage with 795 ring and that one was my main. Ah, well, this isn't quite intended gameplay anyway.