People that do not want to store their XMR in exchanges because of security and that did not want to bother to use CLI because it is intimidating will be able to enter with the GUI. Hard wallet missing it is still better than to store your cryptocurrency in exchanges.
People in the DNM market will most likely want to use XMR instead of BTC with the Monero GUI that looks easy to use and with RingCT for privacy after the 5th of January. Why wouldn't they?
Investors/users that were reluctant in buying XMR due to not having a GUI after years and being a joke can now be more confident with Monero having a GUI and RingCT. It proves that there is continuous development being made and that it is here to stay.
Articles to come and get the words out about Monero having a GUI and RingCT for privacy. Fungibility solved, strong foundation. We like our Monero.
Personally, it looks like a no-brainer that we're gonna go way up but I could be wrong. Anything can happen in the cryptocurrency world ;P.