Has anyone made a mod that deals with all the galaxies in the region of The Great Attractor? I can see it's not in Space Engine simply because I can't find a single galaxy from the Norma Cluster, which is situated right around The Great Attractor. 

I might consider making a mod myself, if nobody has already. 

Just put a giant horseshoe magnet in space... ;P

At the moment there are no any formations larger then a galaxy. And I don't think game mechanics will allow you creating the Attractor or Laniakea. For this you need nebulae mechanism but dat size...

I mean to add all the galaxies in that area from other catalogs

I mean to add all the galaxies in that area from other catalogs

I think there was an addon on the old forum that did that but currently do not have a way to check

That mod was trully glorious. I hope that when the engine is prepared for the real-time rendering of the billion gaia's stars catalogue it can be also adapted to render those 600,000 SDSS galaxies easily