I do not want to see the Celestials, or anything else to do with Kirby's Eternals, appear in the MU ever again. They don't work there for all kinds of reasons, the above mentioned being only one of many.
In spite of all that, like other readers, I do think it's a good thing that some of these characters - e.g. Mantis, Warlock, Starhawk, Moondragon, the Inhumans - are being revived. But like a lot of those readers, I don't see much of interest happening so far. Lots of bombast, lots of explosions, lots of "greatest threats the universe has ever faced", lots of heroes frantically running around, lots of villainous villains villainously ranting about how powerful they are ... but no soul, no spark of a personal creative vision, just a sort of routine that plays itself over and over with small variations.
The thing is though, you can't just turn a switch and say, "OK, enough Star Wars, now I'm gonna do one of those weird, quirky, visionary stories like Kirby and Starlin used to do." It's either there or it isn't. I don't think the current writers, or anyone else at Marvel I can think of right now, have that kind of personal vision, or feel the need to express it in comic-book form.
At least they haven't shown it so far.