What's this about Marlena's ties to the tri solar system? Last I checked her bios haven't been revealed yet and it's pure speculation from fans who don't want her to be from Earth.
I don't think they can do the NA Teela as it's pure cartoon and they don't have the rights.
200X Sorceress being Teela is possible I guess but I'm hoping it's still Teela'na preferably resurrected after the bs King Hiss venom deal.
No where is it stated that Teela is descended from Veena and she's most likely and hopefully not as Adam is descended from Grayskull thus they would be related.