The ideal character sheet for Omnia consists of a few index cards. One card lists the character's capabilities. One card is used for tracking wounds and other conditions. Other cards may be added to list equipment, accomplishments, etc. Cards can be easily rearranged to suit the player, and cards can be added as the character's experience expands. Perhaps most importantly, the moderator can make copies of the players' most important cards for easy reference. This reduces unnecessary out-of-character inquiries (such as, "Do you have an Ability that lets you do x?") that both break immersion and waste time. And they are infinitely customizable. The power of index cards as a tool for role-playing has been known since the dawn of the hobby, and I can perceive no reason not to make use of it.
[See also "RPGaDay 2023: Day 26 (Favourite Character Sheet)" in Applied Phantasticality.]
