I, too would like to see new skins. And if NRS wanted to be super super generous, fix 114 whiffing issues. As a Kotal main, I'll take any buffs they want to give, but I don't feel like we *need* anything at all, provided you see Kotal as a multi-variation character.
And as to needing him? Ehh, no. Especially not his damage. High damage is his 'thing' especially in SG and BG, no crazy mixups in to big damage, and both variations have to build that damage first (totem and lv3 choke) and WG doesn't have crazy practical damage. Hell WG doesn't even have high damage. The most common use in WG for a bar nets you 32%.
Hell Takeda gets 44% for a bar midscreen =\