Just something I noticed while questing, Istar the genie seems quite a lot different as a sprite compared to the image given on the loading screens. Not only this, but she only has three fingers and a thumb in game while on the loading screen she has four fingers and a thumb. Perhaps an update in the future can help fix this.
I think that the Malistaire one looks odd, but I get what you're saying with Istar. I honestly don't think that updating either of them is really that important, and it's just due to a different art style, but I think it would be fine to change them if it doesn't take away from other stuff.