No.
But if, for some odd reason, they do decide to make the new ships superior, they can always just increase their point cost to hold onto balance (to an extent)
A hypothetical new Tie with maybe a gun and copilot as in the movie teaser trailer, would also cost a lot.
Not all hypothetical TIEs are the same. The common black and white one doesn't have extra guns or crew. It's the black/white with red stripe one that has the cogs and extra guns and crew.
