This mod hasn't been updated in almost three years, but I wanted to put out some wishlist features. Maybe someone else will take over or fork/create a new version...

Add a config option to list dimension IDs where a single Stargate will be randomly spawned. The addresses of these gates are stored and later used to create Ancient Address Tablet items in loot tables and/or villager trades. Then add a M.A.L.P. that can be sent through the gate. (Doesn't have to be a visible entity that moves. The item could be right-clicked on an open gate to start the process as a one-time-use deal.) Once the M.A.L.P has gone through (the dimension is loaded/generated on the other side) the M.A.L.P.'s remote can be activated to put the player's viewpoint on the other side of the gate, with HUD elements describing climate and air data.

The quick-and-dirty version of this would just be to have the M.A.L.P. remote object give text data and skip the "camera" view and actual M.A.L.P. object.

This addition would let the Stargates be used similar to the way they were used in Stargate SG-1, with the players exploring new addresses. Compatibility should be provided for Galacticraft and Advanced Rocketry planets (particularly the absence of atmosphere), but any mod's dimensions should be configurable as well.