A few of my skeletals will be getting a substantial overhaul as I have come across piles of new data and material that demands a revision. Brachiosaurus paleo-king.deviantart.com/art/… is already largely overhauled. Little did I know that the Smithsonian actually has multiple fragmentary specimens of Brachiosaurus that have never been put on display! Giraffatitan and Lusotitan are also on the list. You find new stuff in museum collections that fills in some gaps and basically your old stuff becomes outdated.
As Scott Hartman and a few others know personally, this is the real fun part of skeletals