This unique Tier 5 improvement increases ship exp:

The problem is that, being tier 5, all new ships already start at Elite rank. Why build this when you can already build new Legendary ships using T4 "Quantum-damped Circuits" (1280 industry, +100 XP)?

With the Tier 5 unique wonder:

With only Quantum-damped circuits + Big Data Shipyard:

There needs to be a Legendary I to III for the building to be anything more than a trap building that proves you can blow 50 Orichalcix. In a similar vein, most Tier 5 buildings aren't that good for the massive amounts of Orichalcix/Quadrinix and upkeep they ask for. The only somewhat worthwhile ones in a serious game are "Super Biofuel Factory", "Self-mining NPO" and "Mechsuit Quarter", maybe also the carrier upgrade and a T5 weapon (you definitely won't take all if you're rushing).  The rest of your turns are much better used getting the rest of the Endless techs and winning.