Karkat’s land being dominated by a sea of red blood to taunt him is a parallel to Dave’s land being full of metal and gears, things that he specifically doesn’t like. 

The alpha kids’ session and the beta kids’ session were always meant to merge together. Dave is their Time player. The eight player session was foreshadowed here. 

Yes. Conciliatory means to pacify. 

Here.

The body heat of trolls indicates their blood color. 

He doesn’t care about the real issues, that’s canon. Whenever Porrim brings up gender roles Kankri dismisses it as distracting from whatever topic he’s blabbing about whether that be warm-identifying physically-cooler castes or pale aromantic, panquadrant demiromantic, something in the gray palesexual department or such
 

We’ve seen players breath in the Medium where the environment isn’t a vacuum. The Handmaid was in space, not the Medium. 

It’d probably get another troll, i dunno. this topic isn’t really explored in canon

She’s 16