Comes and goes with the wind
The younger ones get unceremoniously dropped off on a planet at the beginning of season 7. Not sure what they were thinking immediately following up Unimatrix Zero with another Seven episode, but the only three characters the writers really cared about by that point were Seven, the Doctor, and Janeway, so it's not surprising. (I'm in the later half of S6 in my rewatch now, and I'm reminded of the shift in the writing)Man these Borg kids are just like...gonna be here for the rest of the show, huh? I'm at the end of season 6 and they're still around!
Speaking of Borg kids, while Icheb is totally a drip and never really that compelling, watching the episode where they find Icheb's parents totally reinvigorated my ire for (Picard Season 1 spoilers) when he gets fridged so violently. Picard S1 was such a good main cast wasted on such lousy plots.