as someone who mains nuwa and occasionally plays other mages, i think her 3 (her main nuke/dps source)'s width is stupidly small and is almost impossible to hit your soldier + your 3 at the same time against people that are moving full speed around and that makes her quite unfun, it's range is already relatively short so you're exposed as a mage with no escape to cast it and the reward isnt even that big
i also play sol a lot and landing sol's 2 is completely braindead in comparison, it does more damage, it slows and it has more range and at the same time sol even has an escape
or zeus's shield + chain lighting, they have more range and in general are much easier to land and zeus has much higher damage and lower cooldowns so he can afford making non-cdr items and do something defensive, unlike nuwa with who if you dont get max cdr shes just much worse
other mages feel so much easier than nuwa cus their skills are much easier to land while nuwa relies on her 3 for her damage and her stun and the hitbox of that is super small and it results in a lot of frustration .. .and then i played morrigan once and i got way more damage than i get as nuwa on average because her hitboxes were much better and her skill is relatively the same concept
if her 3's width is increased she'll be way more viable and reliable and fun to play while still remaining "the same"
same goes with her passive by teh way, too hard to build up to in a fight where u have to land autos as squishy mage and too hard to land to unless u have prior cc