It's kinda wild that you can read an entire comic universe from beginning to end in this day and age.
That's why I think they should not reboot, just make a new line again. There's no reason to use the old ideas make a new line that is headed by another team of superstars just like Ultimate was.
I think it can be done start small and get bigger and blow it up. Have a vision in plan for 10 - 20 years and I think it could be the greatest narrative ever told.