I like gravelpit, I also like Yukon, so I guess I'm with you.
I never really got to play it competitively but the map has a great feel, would love to try, my only concern is that the map feels really enclosed at times, not very big bomb friendly. As for gravelpit never understood why it was removed both in EU and NA, it seems people just don't want to go through the effort of actually learning the map and making strategies.
As for sunshine, I can't really say much, it's decent but doesn't feel anything special. Metalworks is ugly as hell and never liked it, it just doesn't play right IMO. And logjam, well, its getting better but still not quite there yet...
We have yet to see another "Process" quality map. Accepted and loved by everyone right from the start.