I would think someone could code a completely customizable sheet (with user-defined, -addable, and -linkable fields) to be the "base" sheet in the new sheet creation system if one of the existing templates is insufficient. There should also be a function in the new sheet creation feature to view and copy public characters to allow for user-created templates, and import from/export to Excel/.csv to expedite template creation, sheet backup, and interoperability with mobile apps. It's been done in desktop and mobile applications before--there's really no reason it can't be done on a Web app. As another poster has lamented, "sheets" which can't be used with the game feature are pretty useless on this site--we may as well run our game in a Facebook group. The extensive list of requested systems which doesn't seem to have moved much and the occasion of a new sheet feature being pioneered just beg for an entirely new paradigm, a revolutionary (for this site, anyway) solution that, past initial feature design, distributes the work of template creation across the community, allowing for limitless innovation (and taking a load off site administrators shoulders).