I haven't played a Sent past like 12th level for some reason; knowing they're getting some love soon might compel me to give them a spin for the novelty of it all.
I had started a BR/Traps once but lost interest for some reason; sometimes character concept just doesn't hold interest you know? Plus I am very conversant with Traps already.
Ringo's right about BR, the other power set benefits if it's more fire and forget; so that's another argument for Sent.
Poison might be interesting though, as there's a lot of skippage potential in there, which might leave me more power choices to make my character weird (like, I dunno, taking everything from Psychic Mastery or something; I like going off on tangents).
Food for thought, there are all good suggestions! And keep 'em coming if you come up with something more. I'm probably not going to make this one until after ToT season... or that Sent love shows up.