Since Dual Universe is partially about building, what about giving us a tool to replay our building sessions to make cool timelapses like with the replay mod in MC? Another solution would be to let people use bots that they host themselves and that record from a certain point everything happening in one or more core units the bot has been given the "viewing access" to. This last solution could be also used for security cameras but might be used as an exploit (e.g. seeing through the ground like with an x-ray "hack")