Weapons
I was wondering if it would be possible to put hiccups, astrids and alle the others their main weapons.
As cool as that might be, I strongly discourage devs adding the main characters' weapons into the game (although, sadly, several already have like grimmel's crossbow).
My reason for this is the same reason that I have for not including toothless or the light fury as in-game, rideable dragons. This is because, for instance, toothless and the light fury are unique dragons, and moreover, hiccup is toothless' only main rider. Plus, it doesn't make sense that several people could ride toothless simultaneously. Instead, I would even rather that everyone just be able to get a general night fury (even though there is technically only one, but SoD has already confused timelines/HTTYD up so it doesn't really matter). There are already plenty of axes, hammers, even a spear that your avatar could use. And, if people insisted on a flaming sword, the devs could easily come up with a similar looking sword that we can use without using Hiccup's exact one.