Putting the Double's Offspring in charge in terrible, lol. Since they gave insight into what was happening in the League years ago, I'd been rooting for any actual Marik cadet branch family coming back in charge. If I'm not mistaken at this time, they've got everyone back together except for the Andurians and the Marik-Stewart Commonwealth IIRC?
Anson had one kid he disowned . . . not expecting much progress from that group, but Keyon does have a position in the government.
Thaddy became an ash-heap back in early 40s and I doubt he had any wild oats
Little bro Frederick hooked up with a cousin of the Hughes who run Irian all the way out in the Rim, expect offspring
Fontaine Marik seems to be a old childless widower . . . with his insights into ruling its hard to believe he and his wife did not have kids, but . . . he did seem to adopt Christopher Halas-Hughes-Marik.
My point was that Jessica had 5 children before the assassin came calling. Melissa Steiner had none, Trillian seems in no rush, Vincent Kurita did have children but got wiped- Yori has none or even a prospect (which is good for her, she has a expiration date when she pops out a legit heir), Harrison only had nutters Caleb and did not clearly establish ANY law of succession to seat Julian, Daoshen has a single heir who pilots a medium mech on the battlefields but has no consort or heir of her own.
Considering we have had 3 (4 now w/Jessica) head of the Houses die (one had 2 deaths) since the Dark Ages kicked off, you would think the successors would have been taking that duty seriously.