I think everyone thinks about this at one time or another. To fully consider it, I think about how it would actually play out. Initially everyone thinks it would be great to have escorts for their trade or mining ship. The unspoken assumption is that it would be great if I was the only one with escorts. But of course it wouldn’t work that way. All npc’s would be in wings. All (or at least most) players too. That would mean landing pads just got 3x or 4x more occupied. Instances, which can already hard to get all your friends into, are more full. Everyone’s cpu/gpu just got a 3x-4x workload, and it would be worst in combat with all the moves, shots, projectiles, chaff, explosions, fighters, etc. One commander could almost singlehandedly lock out an outpost. I could give many other examples.
Benefits? Yes, it would be cool. But since everyone would be doing it, in the end it wouldn’t give anyone a real advantage or additional safety as originally imagined.
So, yeah, when I think about it, I don’t think it’s a great idea. As I stated increases in, lag, delay, congestion and frustratation would outweigh any coolness in my opinion.