Life gain combos?

[Double-O-Scotch]

{Illusionist's Bracers} +  {Trostani, Selesnya's Voice} = two times populated creature + four times health gain (or two times health gain for each creature)

I don't think the bracers work with the life gain because its a triggered ability not an activated ability (I know that it does not work when attached to a  {Guttersnipe} on mtgo) but it someone can confirm or unconfirm please feel free.

You are correct. The life gain ability will NOT be copied as it is "triggered" and not "activated". The populate ability WILL work.