Hasan

Yes

Left foreground bird is clearly a WRSA. I don't see why right foreground bird is not a SESA.

It seems as though you have your mind made up, but for what it is worth Osprey are very common in the Vancouver area, as you can see from this map. The smaller bird is simply not a Bald Eagle, which has a large head projection and very broad wings, unlike the long, slender wings of this bird and the relatively small head.

Rusty is also a bird of wet areas. Think forest floor, creeks, marshy areas. From a behavior/location standpoint it doesn't make much sense for Rusty

First and third are semisands

Wood Pewee

Traills Flycatcher

Why not Willow Flycatcher? Primary projection is short, underside doesn't look particularly dusky

The photos feel retouched or at least very odd from their natural white balance. Because of that I'm having trouble getting a feel for how yellow the bird actually is

Ehh, kinda ambiguous. Any other shots?

Sorry, there is no chance that a Northern Shrike would be breeding in a state with zero ebirds records of the species.

That's a Nashville Warbler

WESA and LESA

Pretty sure all of these are Forster's and your reviewer is right. For the last bird specifically, note that the black on the tail is on the inside, as opposed to the outside on Common.

Sorry, this is not a Western Sandpiper. Any WESA in April would have at least some bright reddish in the face and scaps, and the structure lacks the front-heavy look of Western, plus the bill is on the shorter end for that species. Honestly this looks ok for Semipalmated. However, I don't mean to be rude, but I'd recommend focusing on field observation in this case, as peep ID from a single fairly low-quality photo is difficult.