wingblade is a good offhand, agility = crit/armor/dodge/AP, stam...item is horde only. because you can get it at level 10, too many herp a derp meme...its a level 10 twink weapon. yes most 19 build sheets from the era listed SF/AB. even when SF was 75-150G, most players due to cost went dual cruel barb on ally side, early horde predom went dual cruel barb, because many missed the wingblade quest line that has a huge XP reward, which dying farm methods can't avoid. wingblade was not worth a reroll
stealth in classic is not like in current retail. predom 19 rogues in van wow went combat spending alot of time out of stealth because it was soo punitive, if you waste points at 19 to have increased stealth it's a huge hit on your open out of stealth fighting at level 19. even pointed its not as deep of a steatlh as retail wow has. you can still get spotted prior to attempting a ambush
rogues needed survivability in van wow, this should be the case in classic. if you research back it was common for rogues to stack stam, +hp/stam librams to head, +100 hp to chest. later getting fishing hats then going +8 agi.