what kind of feedback are you looking for? personal experience? that's probably gonna cut down on the number of responses since a lot of people have custom sumps, either custom built, or custom modified from a breeder type tank.
in terms of design, it looks to be a pretty standard no-frills sump. looks to have plenty of room for a skimmer in the "refugium" side, and plenty of room for a return pump in that compartment.