Shoreline is still changing a bit, so there's some rundown stuff around, and there's some nicer areas as well. My grandparents have lived in the same Shoreline Condo for the past 35 years or so (used to be considered a part of Seattle, though), and have seen a lot of new construction in the past 5-ish yrs, so I think it's progressing. I tend to consider Shoreline the cheap residential area of Seattle to the north. There's really nothing that stands out about it, but you're still really close to everything. There is a nice beach there.
Weirdo Mama to amazing Aurelia, age 9 & Ember Roslyn, age 3!