From the AC:CF Tom Nook Store Guide, which you can find here for future reference:
About a month after the upgrade to Nookington's, Nook will start to doubt his service. As each player leaves the shop, Nook will ask them what they look for in a store.
1) Saying "Variety" will make Tom Nook change the store into Nookington's. 2) Saying "Balance" will make Tom Nook change the store into NookWay. 3) Saying "Hours" will make Tom Nook change the store into Nook 'n' Go. 4) Saying "Nothing much" will result in no store change.
After a few days, Nook will think over the votes of each player and make his decision based on which answer received the most votes.
A) If you choose an option that has Nook change to a store other than the one you currently have, Nook will close down for a day to renovate, like normal. B) If you choose an answer resulting in an change to a store size that you don't want, you will have to wait until next month for Nook to ask you again.
~~ Vicki ~~ Check out my profile flower garden!
"Do not be anxious about anything..."