Sorry, I disagree.
7 days is perfect. Don't extend. If anything, they should reduce it to 3 days. People are treating Restoration like it's a normal aspect of in-game enchanting now, when it's supposed to be a save feature to fix errors and mistakes. Usually when a person makes a mistake, they realize it right away and should submit a support ticket quickly.
Also, tokens should be reduced to just 1 for the entire year. Some people are already using multiple accounts to sidestep the number of Tokens that they can use. Reduce it to one.
Last, if Token Restoration continues to be a heavy talking point, get rid of it altogether. Go back to the old way where mistakes happened and an enchant had the option to succeed or fail on its own merits. No help from NCSoft or the GMs.