I feel like its those feral bonds too. Ferox has them as well. Maybe those are the real hard ones for this build.
Those will be the biggest problem again several FG's. With Fire Queen, the best solution is to simply lobotomize all the queens as they come out so there aren't that many creatures for the bonds to heal with. Ferox is more of a problem and usually seems to come down to being a question of if you can kill him before he gets too many bonds out. If he gets more than 4, it'll be pretty much impossible to do enough damage to win.
Basically RoL/Hope has 3 weaknesses:
1. Rush decks that kill you before you can get the combo out
2. Mass creature kill like Plague or Rain of Fire
3. Decks that can simply outheal your damage until you deck out.
For the last category, best bet is don't play any more rays than you need to and leave as many spots open for dragons as you can, but when going against something like Ferox that can heal 140+ per turn, there isn't much you can do. There will always be some counter to every deck(if there wasn't, it'd be nerfed pretty quickly)