It seems to me that a next-tick effect is analogous to upgrading a controller or trigger a creep spawn. This tick I perform an action, next tick I see effect and resources are gone. The one informational api would just be a counter.
But if you feel it's unworkable, in that case 10K is preferable to the shadow canceling of all intents. Although if the goal is balancing number of pixels I'd argue for slightly under 10k (9.5k?) to reduce edge cases. I still think the original way will likely result in players ignoring it or handling pixel gen in another shard.