So, as we're waiting for the vote to close, I thought I'd share some thoughts and ideas I had for medium to near-term research. A couple I've brought up before, but I think it's somewhat urgent now that we get this to work.
1. Tinder Blade Aura
So, we have Tinder Blades, right? And it's cool, but basically only in the rare situation that we're disarmed. But what if we summoned a Tinder Blade over one of our swords, or over Sagaseeker? That might get our weapons a cool flaming aura, doing extra damage. Now, our weapons are not necessarily completely flameproof, so we might want to experiment with runes similar to the fire resistance runes on our armour, or, even better, something to the effect of "I am strengthened by fire".
Since there's an action cost inherent in changing runes around, could experiment with how this works first by trialling them on one of the weapons we make for our huscarls - even better if one of them has a Hugareida which is vaguely fire-related, as they will be able to make use of the runes themselves.
2. Firestorm-Boosted Flame-Tending Blade
So, we know that Firestorm is really cool for attacking large groups of soldiers, as we discovered on the beach. However, we also know that someone with a higher Firestorm Hugareida than us can combat this, at least partially. (There's even a bit about Logi being called in to put our fires out when we were first experimenting with Unleash Inferno and Flamecalling.) This is problematic, because as the number of warriors on the other side increases, the probability of there being someone higher ranked in Firestorm than us approaches one.
But you know what can't be cancelled by having a higher Hugareida rank? The Flame-Tending Blade, because it's a Finale and part of a Martial Style rather than a Hugareida, not to mention linked to our bloodline. If we can use Flamecalling and Unleash Inferno to harness fire in our vicinity as an energy source, then we can either charge the FTB more quickly, or make it more powerful, or have a wider area of effect, or some combination of all of those things.
So I think that very carefully and at a small scale, we should experiment with this, using a Rewrite to Alloy them if need be. Ideally we'd do this at the beach or somewhere where there is not a lot of flammable stuff around and we can fire it over water.
3. Delayed Action Or Stored Tricks (for Incendiary Charges)
There are certain tricks which would become vastly more useful if we could store them in objects and trigger them remotely. Our Brazier Bombs, for example. There has to be some solution here using sedir or runecraft. Even if it's not actually storing a Trick but just approximating the effects via other means, that could suffice for many purposes.
In particular, if we had a large source of fuel prepared, then some incendiaries which we can lay in advance and trigger remotely would allow us to use this fuel source as a ready-made energy source for Flamecalling into our Unleash Inferno/Firestorm-Boosted FTB. This removes one of its major stumbling blocks, which is needing a large source of fire readily to hand, and allows us the potential to vastly increase the amount of fire we have access to.