It's been stated on this thread MANY times that Tommy basically has been invisible in the comic books for a while. Sure he's got a personal life, but it hasn't really been focused on. Well, if that's the case, Disney probably needs to pull material from other characters to give Tommy a reason to stay in the MCU. Rhodey is going to be featured in Iron Man's most famous storyline. I think Kid Loki could easily take some content from Loki once Hiddleston's character retires. I think it's fun to mix and match stuff. Marvel's got eighty years of comic books to work with. When it comes to Ironheart and Iron Lad, I think it's superfluous to have so many characters with the word "Iron" in their superhero names. Just blend Ironheart and Iron Lad together and make her connected to Kang and call it a day. Audiences will TOTALLY understand that.