As the title suggests I think it'll be reasonable to receive some kind of reward after the completion of the OT Dex. With the Ot cap currently at 556 it's pretty hard completing it considering 3 regions, safari rares, all the locations you need to visit for the different pokes.  If I am not mistaken I am pretty sure in the other Pokemon games after Dex Completion the player got rewarded a Shiny Charm / Shining Charm.   Effect Generation V The Shiny Charm increases t