If MOTUC had an unlimited budget and unlimited SKUs I would say, sure, bring on a new Teela variant. I think there's definitely justification for making a new version of Teela. Teela 1.0 was an early figure, and there's a lot of improvements that could be made, while also giving fans that missed out on her an opportunity to add her to their collection. Also, a more Filmation accurate Teela has merit as well, we should get both!
That being said, I would rather see every vintage figure, concept, mini-comic character, and 4HM fever dream made before wasting a slot on a rehash. We have a Teela, it's time to move on.