But consciousness picks out something different from self-model, world model, information processing, etc. That is to say, none of these things sufficiently describes the processes we refer to when we talk about consciousness. A replacement concept would need to capture everything real about the term. We can replace water with H2O in any context and it makes sense. But there are contexts where we can meaningfully speak of consciousness where self-model (apparently) doesn't completely fit, e.g. "the pain of my stubbed toe overwhelmed my conscious experience".

Replace by "overrode my decision capability" (meaning you cannot act beyond reflex) or "overran my symbolic capability" (it was so big you cannot describe it) or perhaps overrode your other senses (couldn't sense anything else physically) or perhaps "stopped your self model from updating" (blocked integration of other perceptions).

Better? Definitely less poetic but perhaps more accurate.