A new Ruby Destiny!? *gasp* yay. So many questions! (if you don't mind)
Is this a sequel or a prequel? Who's the protagonist? Someone new or familiar? Why are you making it if LoG was intended to be the last? Are you really dedicated enough to see this through? Will some mysterious Pokemon like Sprizzle and Yiyan have a bigger role or at least an explanation? Will you release screens and previews often or keep progress hidden? How can I hug you from over here?
In my experience, sometimes the best source of inspiration is forced motivation. For a long time, I've really wanted to make progress on my hack but for some reason, I couldn't bring myself to be active or creative. So I forced myself off my laziness and messed around with it. Didn't come up with any ideas, didn't make anything serious, just messed around. That eventually evolved into inspiration as I got back into the habit. I realized that the longer I was away, the harder it was to feel motivated. Sometimes all it takes is a little push. :)