I live in Ruschlikon (near Seestrasse too... ) and could not be happier.
True, quite sterile and quiet, no village atmosphere.
But I would disagree about fewer expats... unless Adliswil has no Swiss at all... in my entire building there are probably two or three Swiss families. The same goes for the surrounding buildings, a LOT of expats.
Easy commute to either Zurich or any of the other lakeside villages.
Easy access to the highway if you plan to go skiing in winter.
From where you would be (near Seestrasse), walk distance access to two "Badis" (Kilchberg and Ruschlikon) as well as a couple of cool playgrounds (if you have kids). 5 min ride to Park Im Grune, again a big plus if you have kids.
I understand there is also better tax conditions.
The only downside is shopping and restaurants. Practically non existent.
Fog? I guess yes, but I understand this whole side of the lake is considered to be less sunny than "the other side". I don't think it's a big deal... in winter, when it gets bad, all you have to do is go above 1000 meters and you are golden.
I also considered the new developments in Adliswil when we moved to the area abouta year ago, but I find them (my personal opinion) to be a bit isolated.
Btw, my building in Ruschlikon has 3 large apartments currently empty, maybe you are looking at one of those?
If you want, PM me for details.
Best
Francesco