You should be aware that RV is a PvP zone, so don't get mad when some PvP happens and interrupts your AV hunt.
Joking aside, I managed to take down a couple of Heroes in RV with a team of four. One was a Mind Dominator who spent most of his time making sure all but one Hero was asleep, os really, it was more like three taking a Hero down at a time while someone else made sure we don't get ganged up on.
It was slow and tedious, but it ultimately worked out. I think with a full team and three Heavies, you should be able to take on at least two or three Heroes, a couple of deaths on the player's side included.
Heh,
So looks like even small teams can get this done if you think outside the box. So I'm assuming then the way the Mez protection changed doesn't really effect things much?
Thanks for your reply
~MR
AE Arc: 305214 Blood Diamonds (Villainous)
Unleashed/Unchained/B.O.S.S.
Well, I'm not sure how mez protection PvP changes worked into this. All I know is that it worked out somehow.
And for what it's worth, we only got attacked by a player hero once, but we explained to him we're hunting Signature Heroes, he apologised, and we carried on. I imagine hunting Heroes would be a lot more annoying if an actual players keeps meddling with you.
I'm sure it can be, but them's the breaks of PvP zones. 
And, yes, I most certainly would join in, and not apologize. 
Dec out.
It was basically a calculated risk, especially since most of the team was pretty frail and wouldn't be able to withstand more than three, four good hits.
We weren't a dedicated Hero killer team and even one Signature Hero posed a great challenge. The only reason we managed is because we worked around all the predictable elements. An unpredictable element like another human player could've just made this impossible.
And yeah, that's the inherent risk of PvP zones. I wouldn't have blamed that person if he persisted in attacking us. I'd have just left the zone in that case.
I'll have you know that just as couple of weeks ago, I faced off against Scirocco, Ghost Widow AND Capt. Mako SOLO!
Of course, we won't mention that they pounded me into the pavement multiple times until I finally had to leave. 
Dec out.
I have not participated in a Recluses Victory, AV/Hero hunt since before the PvP changes to Mez protections were implemented. I have a few questions about them for those that have.
How strong are the mez heavy AV/Heroes mez? What kind of team mix do I need to have in order to overcome this?
How many teams would you recommend having to successfully defeat all the AVs, considering you fight more than one at a time?
Thanks
~MR
PS: How long before someone posts to be aware that RV is a PvP zone and that it is for PvP and too not get mad when PvP happens?
AE Arc: 305214 Blood Diamonds (Villainous)
Unleashed/Unchained/B.O.S.S.