Honestly I don't think it would be the end of the world to add ship requesting to yt. Given the amount of gaming that happens for certaon fandoms it's basocally happening anyway. The reason it didn't work before is that they allowed rare ships in large fandoms, and didn't match on ships, so basically everybody got their requested rareship as background at best in a large fandom. The matching is way more doable now, it's just it would be a ton more work for the mods, because ship requesters are the wankiest.