It would be nice to expose some "silent" version of offers that won't try to awake the consumer (it can both fail fast or just offer the element if not full): it can be beneficial when producers know upfront the offer batch size forcing to awake consumer just with a final "noisy" offer or delegating it to other producers that can sustain it. A "silent" fill can work too.
[OPTIONAL] In addition would be nice to expose some mechanism to awake the consumer without offering anything, to perform thread awaking on a separate thread that can sustain the awaking cost.