Yeah... so for Tier 4, we've reached the core. However, there's an elevator going down at the core level. I was thinking that for Tier 4, we start going up on to the other side of Cradle. The skylark was shot out of space from there, so there's clearly something hostile on the other side of Cradle.
This isn't the most descriptive suggestion because if you read the title, it was a more of a note. So for those who keep putting a bunch of talk into Tier 4, describe more of going up instead of down. Reverse polarity... physics and such smarticle things.
problem: cradle is shifting, so whatever there is on the other side of Cradle should have already ambushed us long, long time ago.
also, again, cradle is shifting, so we have reached the other side already.
I may finally remind you that dark harvest is when cradle's night, so the fact that it was dark doesn't mean anything.
then there is the rant about T4: what would add to the game? new weapons? 7*? you consider a combuster new compared to a firebrand? polaris and gigawatt pulsar?
also gameplay itself would feel repetitive again after a while, and you solved anything. after you master everything in the new content, you want moar. what will you add then? a T5? oh boy.