Originally Answered: Aspiring Writer trying to find a publisher?
Sorry you got snowed by PA. Grrr, I can't stand those jerks!
There are always differing opinions on whether to use an agent. Most people who are anti-agent feel that way because agents take an average cut of 15%, which is pretty steep. However, some folks like me feel that it's worth it for the valuable services agents can provide. It's ultimately up to you whether to use an agent or not - but if you don't, be sure you retain a good lawyer to look over any contracts you may be offered!
To be perfectly honest, the fantasy market is flooded right now and very few agents OR editors are looking to take on new, unpublished fantasy novelists. The few markets that are open to new fantasy writers are extremely difficult to impress - Tor, for example. You have to be darn good to get them interested. Your first page of your manuscript had better be super-tight with an irresistible hook - yes, you must have a sweet hook right on the first page of our ms; that means in the first thirteen to fifteen lines of text! That's how hard fantasy is to get into right now.
To be honest, you will probably have an easier time setting Legacy of Diimau aside for the time being and starting on a new novel of a different genre. Other genres are less flooded and there are more markets for manuscripts, and they are more willing to take a chance on a previous unpublished writer. Science fiction is a little easier to break into than fantasy - historical fiction is even easier, and romance is usually never terribly difficult (relatively) to get into as a first novelist. The reason why you might want to at least consider a different genre for the first novel you market: Once you have a published work under your belt, a fantasy publisher will be much more likely to take a look at your work. You've already proven that way that at least one other editor saw merit in your writing and that you can interest another publishing professional with your product.
My final bit of advice for you is to consider a different subtitle. In a query letter, an agent or editor is going to encounter your title before almost anything else, and "Insignates Accrued" sounds really weird and confusing, honestly. I'm a pretty smart cookie with a crazy-big vocabulary, and I have no idea what an Insignate is, nor do I understand how or why accrual may apply to them. If an Insignate is a feature of your unique fiction, that's well and good, but perhaps accrual, such a technical financial term, might not be right. Maybe "Insignates Collected," "Insignates Gathering/Gathered," or "Insignates Rising" might make more sense in a fantasy context. These little things are all points you have to carefully consider before you start submitting to a conventional publisher or agent.