Generally there are problems with reference planes when changing layer from bottom or L8 to higher layers.
On L8 many pairs cross different L9 planes
Differential lines on bottom cross different L9 planes
Reference plane changes from P1V2 to P1V5/GND, one GND via is not enough for this SFP signal
Reference plane changes from power to GND, there should be a capacitor or two around here
Same here
And here
There should be more vias here to avoid interference