Having played a few matches now, mechanist just doesn't feel like it's worth it anymore. The major advantage it offered early game (double growth) is crippled by steep resource requirements, which tie up several pops per assembly. Considering it takes both ages to construct the bots and get return on investment, it just doesn't make sense as an early game civic.
Rushing the building on new colonies isn't viable as it bankrupts you, which means you're left with a paltry... 2 extra growth on the capital. In contrast, hive players and other builds get the same advantage for more or less free compared to what it costs you with mechanist...
Low upkeep pops? Slaver Guilds does that too. Double growth? Assimilators offer that, and it's better even without stacking growth bonuses. Extra starting pops, or overall growth? Hive Mind beats mechanist there too.
It's worth pointing out that compared to robots, organic pops are essentially free. As long as you're not running a food deficit, they'll grow. Which is fine, considering it's what you start with. But the growth bonuses you can stack on organics (even healthcare jobs) are cheaper than going with bots.
Rushing the building on new colonies isn't viable as it bankrupts you, which means you're left with a paltry... 2 extra growth on the capital. In contrast, hive players and other builds get the same advantage for more or less free compared to what it costs you with mechanist...
Low upkeep pops? Slaver Guilds does that too. Double growth? Assimilators offer that, and it's better even without stacking growth bonuses. Extra starting pops, or overall growth? Hive Mind beats mechanist there too.
It's worth pointing out that compared to robots, organic pops are essentially free. As long as you're not running a food deficit, they'll grow. Which is fine, considering it's what you start with. But the growth bonuses you can stack on organics (even healthcare jobs) are cheaper than going with bots.