Good improvements, imho.

I'm wondering though, what sort of climate(s) do you have in mind. For some reason, the map resembles Alaska a bit, to me, so I am imagining something towards cold and forest covered. Still, this is a bias from the land shape and I have really no idea. What are your thoughts on it?

The reason I am asking is that a high altitude lake doesn't need to drain unless the precipitation is significant, it could just be on the rain shadow of the ridge. Hell, if it is reasonably high and dry it will simply fill in spring with melt waters and have its level dropping until next spring because of evaporation. No draining would mean no nice valley for people to travel through...
Still, it's your map, so I don't want to intrude with too many ideas.

The revised coastline looks very nice.