Just in case you haven't already considered it, which aspects of Silver are currently boring you? If creative rejuvenation is your goal, then it only make sense that you tackle the holes in your current comic's self-fulfillment patterns.
Bad Water is pretty dang sweet. You've got a great hook, charming designs, and a cast which offers for many subplots. Comedy adventures usually end up being fantastic, too, so I suspect it'll captivate both an audience and yourself.
Factor XIII seems somewhat similar to Silver -- rename Darion "Jeriah" and replace all the vampires with werewolves, and you'll see what I mean. The designs don't particularly stand out to me, either, and unless you've got some tasty subplots in store, I personally feel this option falls flat.
The Chains of Destiny honestly confuses me. How will your protagonists travel a world where all the architecture and infrastructure is built for flyers? And why would you create an awesome setting like this if your protagonists can't take advantage of it? You won't be able to draw any flying kisses! D: Anyways, the setting has promise, and the designs aren't bad, but the current hook is both predictable and bewildering. I personally wouldn't be interested in reading it in this state.
CORE looks crazy cool. Like, Watchmen meets The Other Grey Meat crazy cool. You will have fun drawing it, and your audience will have fun eating it up. End of story.
Burning Blood has one of the most intriguing hooks I've seen in a while, and has the potential to really shine if you let it. However, if your goal is to find a secondary comic to Silver, I'd hold off on this one, because I'm guessing that at some point either you or your readers are gonna want more Burning Blood than Silver.
In summary, I think Bad Water and CORE are your best bets. Wait a few years before you take on Burning Blood, 'cause that one's a story you should be able to devote your full attention to.
--I have a considerable amount of work on my plate and not enough motivation to tackle it all.
--Things don't seem to improve after each hurdle.
--My mom is too active in my life, my dad isn't active enough, and my siblings are all loud and obnoxious.
--The things I thought were destressing me aren't anymore. (video games, comics, music)
--The world is asking me to grow up too fast.
--It is extremely cold here in Utah, and the roads are dangerously icy. I'm afraid I'm gonna kill myself or someone else every time I go outside.
--My social etiquette is breaking down. (erratic and antipathetic) It's causing further problems which I just can't handle right now.
--Time is running out. Senior year of high school's coming to a close, and I can feel the opportunity slipping between my fingers like sand.
--I'm starting to realize my character flaws.
--In particular, violently melodramatic mood swings seem to be my modus operandi.
--This is a terrible behavior, but it's deeply integrated into my personality. I can't seem to shrug it, and I doubt I ever will.
--I don't think I can handle the guilt of being an attention whore all my life.
--I've also recently discovered that I am actually a narcissistic perfectionist. What a &&&&ing terrible person I am.
--Haven't been asked in good faith to a girl's choice dance at all during high school. I've spilt blood and tears trying to adapt to society, yet my efforts are for naught. I consider this a measure of social validation, and I suppose I haven't passed it.
--My dad's Korean and my mom has high &&&&ing expectations. This has driven my to great accomplishments, but despite the lack of any verbal abuse I can't shake the feeling that they hate me for letting my emotional turbulence hinder my progress in life.
--In fact, their attitudes are coloring my own. I really &&&&ed up for not taking advantage of life. Lazy, self-centered, not-worthy-of-pity Giga should either get movin' or give up on life.
--Worst part is, all this is probably just in my head. Which makes it even sorrier.
--It's becoming harder to ignore the darkness in the world.
--I'm starting to see human beings as a collection of flaws and the "good things" built around those flaws.
--I'm struggling with my religion. Don't get me wrong, my faith is steadfast, but the social fallacies of the culture and the elusiveness of practical applications of the doctrine aren't helping me right now.
--Nearly everyone I know is superficial and self-gratifying.
--...just like me.
--Society has always praised me for being "special" due to my smarts, charm, and imagination. I'm starting to suspect it was mere flattery.
Look, I know I'm usually just attention whoring in this thread, but this time it's serious. I'm getting more stressed, depressed, and cynical with each passing day, and my behavior's becoming increasingly erratic and antipathetic. I don't know how to stop this fatal train. Please send help.
The True Oracle:Oh, dear fellow Oracle, I see that you have once again found time from your apparently busy schedule to answer the questions of the common person, so I will leave your thread for you. Sometimes when a thread languishes for too long it dies, I for one hate to see that so I kept it alive for you and you may have it back. I hope that your arbitrary standards for questions do not once again prevent you for answering any.
Why can't we have two oracles? 'Cause the True One is pretty rad IMO.