As someone who strictly plays TBCC, I haven’t played retail since the early days of BFA. With Warmode, I remember it being simply overrun by Horde and most alliance turning it off.
What’s balance like with warmode on now?
Who is considered the dominant pvp/pve faction?
Was anything done in later BFA/Shadowlands to help??
Thanks for the answers!
I’m not sure about Warmode, but Horde is considered the place to be for both pvp and pve. A lot of guilds have been switching to Horde for raiding and the flow hasn’t stopped from what I’ve seen.
Nope. Ion said it wasn’t something they will mess with.
Ballance in warmode doesnt matter because on either side, if youre not in a group, youll get killed by a group from the other faction.
Dont do war mode 
yea and it can snowball also
get killed by 5 get 5 kill them
they get 15 you get 15 till its a all out war
Keep in mind, very few people outside of Blizzard have access to facts based on data to answer your questions.
Having said that I don’t recall any patch notes about improvements to Warmode-ON sharding. Based on what others have said (no personal experience), 100 players could be evenly split on a shard between the two factions, but Faction A is dispersed all over and 70% of Faction B is a guild-team that is highly concentrated in a 100 yard radius. The algorithm thinks that’s balanced, but clearly it’s not.
My understanding is that a “PvP shard” covers an entire zone like Zandalar or Kalimdor and doesn’t adjust based on more localized disparity. If the zone were spilt into hexagons that are 500-1500 yards apart and each hexagon was “balanced” then that would be ideal from a player perspective, but I don’t know how resource intensive that would be (can the servers handle it) and if it’s enough value to Blizzard in retained/returning PvP players to make it worth the cost (when’s the break-even point for the investment if there even is one).
Given the current complaints I read on the forums from PvPers, Blizz would not only have to balance on a much smaller geographic scale, but they would have to balance power among classes (to hear some tell it, there is zero balance; play specs X, Y, and Z or get stomped in Arena, BG, open-world).
Edit: You can scroll through WoW Progress or WoW Realm Population and perhaps get a a feel for just raw numbers by server (mostly relevant only to PvE).
Horde is dominant in every form of play because the devs play Horde and don’t care about Alliance.
It’s bad. Also; every time it’s brought up to the devs that horde dominate all competitive activities. They say something dumb like they have been staring at it for over a decade so they can think carefully about how it’s all a player made problem.
Then to top it off. They like to say the population of each faction is really close like no one has ever taken a statistics class.
The comparison being the equivalent to saying two towns with similar populations. Then they try and spin that both towns should have the same number of elementary schools when one town has 80% of it’s population at retirement age and the other side only has 20%.
Ion has an honor level of 6. So he really has no experience with PvP, but he’s in charge of it.
I couldn’t get pugs on the Alliance for raid content without waiting literal hours to get a single group together.
Meanwhile on the horde, 15 minutes tops, 30 minutes at most if you’re trying to pug at a bad time.
Mythic + groups form instantly.
Horde majority on all servers. Alliance suffer finding people for raiding.
Don’t provide facts if they aren’t accurate.
OP - you can look up faction ratio estimates from aggregation websites (such as WoWProgress).
There are more Horde overall. Horde is also much more highly represented in end-game content as a large majority of the top raid guilds and M+ players are Horde).
However, some servers are Alliance dominated. The region of Oceania is also primarily Alliance.
WarMode is generally dominated by Horde but some shards are balanced or even Alliance favored, especially in Oceania.
The reason for faction imbalance isn’t some conspiracy, it’s community-driven. It’s because Horde had the better racials a while back so more hardcore players went horde, and players followed them. Alliance have had better racials more recently according to some top players (last two tiers), including having the best ability for high keys (Night Elf’s Shadowmeld), but it wasn’t enough to bring people back to Alliance. Some guilds considered it but the small mechanical gain wasn’t worth going to a smaller and more casual playerbase.
You mean back in legion when the alliance lost around half of its high end raiding guilds from mythic Kil’jaden?
Such ancient history of a once upon a time.
Its bad.
Horde
That would require the devs to care about the problem. They’ve already stated they have no plans right now to fix it.
Is this a problem for the Horde? No, it’s not.
So developers won’t take any action.
Everything goes as planned from the beginning.
Even the smallest things that could at least mitigate the current state of affairs will not be done as they would be a waste of the developers’ time with the alliance.
“If it ain’t broke, don’t fix it”.
Have Mercy. 
“I’m mad the devs won’t give alliance more rewards then horde”
Basically what the faction imbalance arguments boil down to tbh.
It’s atrocious.
Almost all shards are horde dominated, except the main RP server shard, which is Alliance dominated.
No.
Unless you are on an Oceanic realm where it swings the other way. Alliance is on top here.
Oh yes, sit in denial all you want lol.
Are you okay?
Well ofcourse I am, I’m horde.