Anyone switching from another chess site to lichess is switching because of Chess Insights, which is the feature that really sets lichess apart from any other site. However, when you can only import one PGN at a time via copy and paste, and people have thousands of games in archives in various PGN files, it is very disappointing to learn that a person can't analyze all his games in Chess Insights without wasting tons of time in the import screen.
Allowing this feature would also be helpful for the new Opening book database: the more games lichess has to draw upon, the more powerful the database. And the only cost is a little bit of storage space to store the tiny PGN files.
Allowing this feature would also be helpful for the new Opening book database: the more games lichess has to draw upon, the more powerful the database. And the only cost is a little bit of storage space to store the tiny PGN files.