I thought they could both be the Heart - while Allen's Innocence's weird behaviour can be explained, it's the same evidence for Rinari's, which can't. Aside from both acting on their own, there are the dreams... and I'd totally forgotten until I re-read the manga, but the title should really be "Rinari's DREAM" - she's only had one (made guest appearances in the other). And then there are the random psychic connections... connection...
But hey, the Heart does look like some kind of combination of things. (The spikes don't look like part of the frame thing.) So... ~
Although LOVE power does exist, it gives Allen power-ups. ^___^
It seem that Rinali and Allen seem to be the one who have a lot of connections, that I have to agree. But then again other people's hidden innocence's power are scarcely mentioned (Rabi's right eye is yet to be mentioned, same goes to Kanda's symbol on his chest)
Perhaps all these young exorcist are the pathway to the heart??
Mel. Just some fanart artist who wanders around.
Maybe... but then it wouldn't be romantic! (Rabi's eye might have to do with being a Bookman/memory/something, though, and Kanda's seems to relate to someone else - not the Innocence or another Exorcist.)
Rabi's eye is most likely related to his Bookman profession (maybe the ability to "Search" - seems some people on this forum could use that [refers to other section of stoptazmo.com])
While Kanda.. seems to be another avenger type (I hate those guys). Seems he got branded and he will kill the guy who made this sign (or other way around, but I positive it's another avenging stuff - and all avengers can't cooperate and work as a team - see Sasuke from Naruto)
Hm, I should make a picture of Rabi with the word "search" on it to use now~
His eye probably gives him faster recognition skills or something - like if he used both his eyes he'd have a messed-up world...? I suspect Kanda's more like Kyo from SDK; something to do with a woman, not avenging.
Hasn't Kanda said sth like: " I can't die untill that guy is not dead" or something similar. I don't remember where it was said but it was for sure.
He can't die until some other guy is dead? Hm, maybe... I still think it has to do with a girl/family member, though. (If it's an older brother, then that's just dorky. -____-;; but then again, look how popular Naruto is.)
All avengers have some kind of woman involved (except Sasuke, who was a brat, if you of course not consider his mother as woman..).
Well, there is a reason Lavi doesn't want to use both his eyes - your theory could be the closest to the truth right now.
Well, there you go - Kanda probably has a girlfriend somewhere. ^_^ Hope she didn't get killed in Edo. (....Sachiko? =P Kidding~)