Have you ever considered installing a custom rom on your G2?
It can be a bit of tricky procedure, and you have to follow the instructions fully with patience.
I ask this because there is actually a port of the G3 software for the G2 on the XDA forum. Its worth looking into -
Originally Posted by Brady12: “I've read that it will get the G3 UI later this year and that it's also getting Android L.”
It will get the G3 interface with the L update. I very much doubt it will be "later this year". K came out on the N5 -31/10/13 and the OP has just received it now. LG does not do quick updates. But prove me wrong LG.
I only got my G2 on Friday (£175 from Vodafone, yay). I lasted 25 hours before I flashed CM11 as the UI was that bad. With CM 11 I am very happy.