Alrighty, so Bloodstorm Blade 2 gives allows you to count ranged attack rolls as melee attacks. Cool, so you can use them as an attack of opportunity.
One thing is, it never says you actually convert the ranged attack into a melee attack, only that it is counted as one.
So... Bloodstorm Blade 10 gives you the ability to make a single ranged attack that hits every one in sight.
So a Bloodstorm Blade 10 can hit every one within his range with an AoO...
I think this would be the beginning of an excellent lockdown build, seeing that Stand Still works off of an AoOs threatened area, and Mageslayer stops any casting while in your threatened area...
I really hope this is legal.