Do you realize, that if Burrows didn’t accuse Corvo for being the murderer (or if Corvo came late), the game plot would go from “search and hunt down Daud” thru “finding out Daud was paid by Burrows” and “Burrows using the fact Corvo and Daud spoke to frame him for the murder” to: basically the rest of the plot, just
maybemore difficult, because they’d be expecting Corvo going after them.
I suppose the Loyalists would still be present, because Corvo would have to lay low for a few months, possibly fake death, but if Corvo spares Daud, they could have useful supernatural allies. Or something like that.
or maybe burrows would have been a bit smarter and kept corvo busy with ‘forget about the killer for now we need to find lady emily’ (especially if corvo arrived two days later as planned - he could claim ‘no we have no idea who the killer is at all’) and led corvo on the merry chase around the town like ‘my spies tell me there is something suspicious going on here and there, maybe that’s where lady emily is’
burrows’ note to daud says sth like “corvo would have been very useful to me”, he’d probably try to keep corvo on his side