As T.G. Oskar pointed out, I mentioned that the Giant heritage is influenced heavily from the Eberron style of giant. Additionally, if you look through the various SRD giants, many of them have an innate magical connection (elemental, admittedly, but still magical).
I chose level 15 for several reasons:
- It's when you gain your third iterative attack, making the methods to do grant iterative attacks remain their special feeling of double your normal number of attacks.
- I've seen a bunch of 5-level warlock PrCs that focus on a specific invocation or something, so it's a good break point for someone that wanted a 5-level PrC.
- As this Warlock isn't intended to be a top-level blaster, I didn't want them getting it too early.
I'm not sure exactly what you're talking about in regards to EG, HB, and EC, but if you chose to use your melee options, you'd still be able to spend a swift action to use your EB once. I can see some messiness there, and if it stays I'll clean that up.
A quick note: I'm completely open to changing things, and I apologize if I come off as stubborn or unbending. I just like to have a discussion as to how and why a change should be implemented first, as well as explain my original intentions.