The ideal choice for a recast Troi would be Laila Rouass from Primeval. She looks uncannily like a younger, more exotic Marina Sirtis.
You mean your ideal choice right?
Yes she may look a bit like a younger Marina Sirtis, but Ms Rouass' heritage is from India/Pakistan region of the planet, not Greek as I believe Ms Sirtis is.
Not that that matters one bit though to be honest.