There are two major enhancements that would be nice to have the app support for Ark instances:
clustering of multiple ark instances (usually used in context of different maps that you can export yourself to at beacon towers) .. This is not clustering servers, it's a specific way maps and instances are installed as a 'cluster' (same server is fine) where you can transfer between maps at will.
Map selection drop-down . . The map names in Ark are very specific, and some are seemingly illogical.. so it would be a lot easier to be able to select config options like Map type (e.g. 'TheCenter', 'TheIsland', 'Ragnarok' and 'ScorchedEarthP' [note the "P" in the Scorched Earth map name]) from a drop-down.