I wasn't talking about getting it early; I was talking about getting it normally. Megaengineering is 20 times more likely to show up as a tech option if you own a megastructure. Making it so all precursors give a megastructure would essentially turn this from a conditional to a guarantee, at least for the player, which I don't think is a good idea.
The relic is actually better than the "free" ring world. However, the action costs 10,000 minerals and 3000 unity. So you're trading~4375 pop months (miners plus bureaucrats plus consumer goods) for ~3333 pop months (alloys plus minerals).Interesting, that's when I'm crutching on the Cybrex Relic to generate a fleet's worth of alloys in one click.
You're probably better at this game than me.
I feel like these need a better rationalization.Zroni: for machines and non-psi ascension regular empires it's the worst precursor, so they get one of the best megas for a machine empire. Furthermore, their home system had no habitable planets, so it doesn't lose out by finishing the Dyson Sphere.
Baol: quite decent IMHO, having a bonus Gaia World every 10 years is not bad at all for many empires, so I assigned them a decent B-list mega, but there's no compelling reason behind it.