Sometimes I go to fight the High Dragon at a higher level and come prepared with legendary gear, balm, salves and properly set tactics and all. When I reach the mountain top, I realise that I forgot Kolgrim's horn.
@ Mike3207 - This is about Arcane warrior I guess? Warriors don't really need fatigue redution or stamina regen. Death blow practically means an infinite stamina pool, and second wind on top of that. Mix matching armor pieces provides heavy boost to the primary stats for a warrior.
Rogues don't need heavy armor; Legionnaire scouts can safely go through the game in their smallclothes. Battledress would increase dex by the greatest amount.
Even mages who are blood mage-arcane warrior don't need a high mana pool. Anything related to blood is bugged in awakening and hardly drains anything compared to Origins. Even for non blood mages, I think shimmering shield is unnecessary unless the mage is the primary tank. And if it's heavy spellcasting you are after, you wouldn't wear armor or repear's vestments in the first place; rather something like Spellminder or the Vestments of the Seer that increases spellpower and mana. If you are soloing or tanking, than I can surely see the need to have the mana regen bonus from Wade's set. Though even in this case, depending upon the player's needs, there are other options like let's say using dweomer runes and swapping spellward for nature's blessing.
What I mean to say is that we can't really rate the best equipments in terms of just one criterion, even in origins to some extent. As an example, Evon's Mail/Wade's combo is probably one of the, if not the, best all round armor set for a warrior, but it's still inferior to something like the Warden Commander's Breastplate, Cailan's Gauntlets and Cadash Stompers combo when damage dealing is concerned. Nice to have perspective, just saying!