Skills in the game

Scouting is a valuable skill! In some cases, you'll see the desired object earlier or, conversely, a strong enemy that it's best to avoid for now (and it hasn't seen you yet!). Well, and for walking on water, flying, or using dimensional doors, scouting is invaluable: if you can't see a cell, you can't enter it! All of this is very noticeable on large maps.
And I forgot to mention Learning: for me, it's an almost useless skill, wasting a slot. +15% to experience is insignificant.