i would like a position search in game archive.since search is in context of a single user that should not be very resource intensive.
starting point could be first few moves search, an option to select games played as white/black, games in standard openings.
Go to Game Explorer, change the database from Master Games to My Chess Games, then select if you are looking with you playing White or Black. Then, just make the moves to get to the position you are concerned with. You can then view all your games from that position, if you don't have too many.