Alrighty, this Typh discussion is starting to get a bit out of hand x.x. Personally, i really don't see Typhlosion making much of an impact even with Flash Fire released. It's still pretty much the same Pokemon as before, and it still has the same issues that it did in the past (Competition from other Fire-types, the only real advantage Typhlosion has over say Delphox and Houndoom here is Eruption, which is only really an advantage if you can keep it at full HP at *all* times).
As for using a Pokemon with Flash Fire to deter Moltres and the like from spamming Fire Blast, i really don't see a reason not to just use Houndoom here. Houndoom has a ton of important things over Typhlosion, including a secondary STAB that makes getting past Slowking a breeze, a deadly boosting move in the form of Nasty Plot, and access to useful moves such as Sucker Punch, Pursuit, Taunt, and Destiny Bond.
What does Typhlosion have over Houndoom here? Eruption and.......5 more Speed Points that rarely matter in the current metagame? (all you really do is tie with Glalie post mega evolution and *always* outspeed Drapion and other Houndoom, the latter of which can just snipe you with Sucker Punch anyway, Sigilyph also falls between Houndoom and Typh's Speed tier, but it's not exactly common and Houndoom is the bane of Sigi's existence regardless of whether it outspeeds it or not .-.).
Idk, i just *really* don't see the appeal in typh