Maybe this isn't the right way to go about this, but I've had some lingering ideas for agents/utility and figured making a little thread for us to all spitball ideas and possibly give Riot some inspiration. If this post breaks the rules, I apologize.

Defuse kit - have an agent that has an ability (maybe a passive) which allows them to defuse the spike quicker, like a CS defuse kit. Maybe not as quick as a CS kit, but knowing you have an agent who can defuse in 70% the time could create some interesting strategies. Or maybe not.

Utility boost - what about an agent who doesn't have smokes or flashes, but can 'give' a teammate another piece of utility. Say you're holding site with Omen and he smokes off the two entrances, but you need a third smoke. This agent's utility 'token' could be transferred to Omen and replenish one of his smokes. This might be completely impractical and I could easily see it leading to unbalanced utility spam, but at the same time a support character who has minimal direct impact but can give their utility to other agents sounds like a kinda fun idea. Maybe this one agent has a light heal, ability to replenish up to 2-3 utilities per round, and a defuse kit. Only cheap abilities -- not a Sova drone or Skye dog. True support character.

Mirage wall - Almost like a Phoenix wall except the enemy sees the normal backdrop, hiding any agents behind it. Again, not sure how practical this is, but it sounds like a cool idea in my head.

Black ice - almost like a Sage slow, but the opposite. Use this ability on a corner that normally gets held and the enemy will simply slide across the ice, facing a movement accuracy penalty the entire time. Could also use it on hallways to make the enemy slide forward onto site earlier than they wanted. This would probably need major testing before putting in competitive games, but if balanced properly could be a fun utility. Paired with a smoke, this could easily be an OP way to hold sites.

These might all be trash ideas, but I'm bored and figured I'd share them rather than just let them linger in my long-term memory until they eventually vanish. I had more ideas when I decided to make this post but I've already forgot them.