Yes, I believe the plan is to get any input required for the tier rewards through the Larian Vault (as well as managing add-ons). They are only allowed to send out one survey through kickstarter, so it would be best to leave that until they need shipping addresses, so they don't end up having to either double check addresses later or deal with people who move before the release date. The creative input will need to be organized earlier than that.
There will likely be a kickstarter update or two before the Larian Vault upgrades are ready.
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