For the love of the Twelve, please make the model swap optional. It's antithetical to the job identity of SCH and actively clashes with the formal academic/military style depicted by the artifact gear, which some of us like to use. Omnihealers and white robe enjoyers might not mind as much, but they also have other class options to play to match that visual fantasy.
I'm not a fan of Reaper's Enshroud, either, but at least I knew it would be a core part of the class when I picked it up for the first time. Enshroud also resembles the kind of clothing you would expect to put a Reaper in to start with.
Toggles for both of these would be extremely welcome, but Seraphism most of all. The devs of other major MMOs learned this lesson long ago and gave players options to customize the visuals of certain skills. A change like this would be wonderful.