Well,as long as it is good,I'm happy.
Does it need to be a badass action pose?No,but it could be something besides her just standing there doing nothing with a bland angle & bland ass background.
is a good example of how to do a good standing pose.
As for Leona herself,I say take the chance to buff her a bit,you know give her some muscles.If the artist doesn't,that's fine as long as the splash is good.
Hell,if they want to alter her design a bit,I'm all for it.Though,not too much or else the in game model (which won't need a VU,most likely a small one, for another 3-5 years,visually the model & abilities are good) doesn't match the splash art.
Yes,update the splash to fit with today's standard.