I would take t wire out vs manaless dredge I guess!
Honestly, if they run lands, it stays in. And the answer is nearly always Tangle over lilly, unless you are playing ur delver and they have just dropped pyromancer and you know they don't have a free spell in hand. Basically always tanglewire over Lil. Maybe against elves you can construct s corner case scenario where Lil gets dropped first.