The DayZ launcher is still very slow, and this is not something that has become better with the recent influx of hundreds of Chinese servers, many of whom don't even seem to be real. While this will not help with the slow scan process, a way for the user to choose ip:s (or other attributes) to exclude would very much improve the search for valid servers.
In short, as an example, I would like to filter out all servers with an ip beginning with 43!