Honestly don't know why you'd drop Volcarona for Arcanine, the former has Quiver Dance and is an absolute threat on any team. Though I also don't see how Electivire is a wall...?
I don't know if Snarl is actually a good idea in general (its damage, with Impish, will be very low and just serve as chip (or chip spread in doubles)). The reason I run it is because after a Snarl, Sylveon can waltz in on just about anything with its monstrous SpD if its a bad match-up for Arcanine (and also let's me refresh Intimidate). Serperior also likes having Intimidate and Snarl to neuter enemies for switch-ins to set-up a Leaf Storm.
I'm actually tempted, on the topic of Volcarona, to slot in Venomoth for my team just to have that threat and have a decently solid Poison type.
Don't think so. Also I don't like Flash Fire as it only helps Fire-type moves and you really should have coverage. Intimidate just helps against everything except specials (which, admittedly, is most of the current meta due to the physical hate). Still helps neuter Weavile and Mawille (and Azumarill) a bit.
This happens all the time, first thing I bred aside from my Sylveon was a Gourgeist-XL... and he's still level 1 and I still haven't even gone back to him after re-evaluating and slotting in Serperior in his stead. He's just sitting in pokebank after all that breeding and catching work (for the size).
I construct my team with 3 Physical and 3 Special Pokémon. If I would bring in Arcanine he would take my Electivire place. I never used Electivire as a wall he was just 1/3 of my Physical team.
I never felt right using two of the same types on the same team which is why I'm looking at maybe replacing Volcarona if I did run a Arcanine.
My problem is that I only battle with Pokémon I like/love whether it makes sense for my team of not. I've bred, raised, EV trained a Sableye, Mamoswine, 2 Lucario, Shiny Blaziken, Physical Charizard, Special Charizard, Physical Greninja, Special Greninja, Niovern, Scizor (just traded him away), Tyranitar, Jellicent, Magmortar, Dusknior, Garchomp, Gyrados, Goodra, and a Aegislash to level 100 that I may never use again.
I may replace Volcarona with Aegislash but not sure yet.
My core team is Dragonite, Weavile, and Gengar. I'm hoping Sun and Moon introduces a starter Pokémon I can vibe with to make a staple for my team.
Thinking about battling has me thinking about a certain competitve website fanbase who tries to force the way they play on the entire fanbase. Annoys me.
Sorry for the ramble and thanks for the Arcanine input.