Mole isn't effective for darksiding. In LW we have played for almost 4 years with mole in our so called "Histeria" version, and all that moles do against darkisiding is making the worm change the position from here to there, from here to there, and again and again. You can steal some spots anyway doing that, and that adds some "flavor" to the scheme, but is not an effective way in order to avoid the darksiding, despite that is a very good weapon for tactics... opening paths to cows, nades, petrols, etc., but not more than that.
With WS the game will focus on dominate a certain area of the map, a high side, keeping your worms close each other, waiting for the SD and gg. If your worms starts at the bottom of the map, you are almost dead. WS changes a lot the sense of Hysteria. If you can't handle the rotation, you are not doing well the things on Hysteria. If 2 players play in the same way, and the obvious final situation of 1v1 with 80hp each worm is the problem (due darksiding, or keeping your worm at one border of the map waiting for winds), maybe some limited teleports would be fine AND mole there, nothing more.