It is extremely frustrating trying to promote astronauts. Considering you need luck to get the card again the grind is frustrating and not fun. Promoting them should be linked to length of time you have had that astronaut not how many relics you unlock or buy. Also science points should be removed from the legendary loot box, ridiculous that I spent money on relics to spend hoping for something worthwhile like a legendary astronaut but instead I got less than 1k science points from 3 openings