No, the world is big with or without portals. GW2 lets your teleport almost anywhere on the map, yet the world still feels huge. Although I love flying, flying is more of a detriment towards making the world feel smaller. Also make bigger worlds if you want the world to feel bigger, Legion and BFA both gave us a pitiful amount of land mass to explore.
No.
See, the world didn’t need portals when there was only one expansion. Now that there’s over half a dozen, we need an ability to travel to places we want to quickly. It isn’t immersive or interesting as a max level, being forced to take a boat to get to Northrend for the 200th time.
Some of these spots are actually way out of the way, like old Dalaran or the Caverns of Time. Or getting back to Stormwind/Org from Outland as a low level (why is the Hellfire portal being removed, why?).
But a lot of these aren’t necessarily “difficult” just more so just far enough to not be bothered to run to. There is an illusion of saving tons of time when you can just blip somewhere. Sure, I can take the portal to Twilight Highlands, AFK fly to Kharazan, or I can just go to the Kharazan portal. It entices me to explore more because the feel of it being easier.
For example, the love is in the air event is going to be painful next year if these portals are actually removed. Enough so where I don’t think I’ll be participating. I had a good routine going down where I would use the HFP portal to get between cities much quicker. Going from Org -> Dal -> City -> HFP -> Org repeat. Made the dailies quick and easy, had me playing the game more than I usually would be.
Now if that option was removed, I wouldn’t feel enticed to do any of it.
Blizzard, I am pleading with you. Please stop taking away player options. I understand that your dev team thinks that they’re oh-so-above all of us plebian players, but trust us sometimes, we may suck at a lot of things, but we’re incredible at calling out things that aren’t fun. And one of the worst things you can do to a playerbase or just a person in general is take away their agency. Please stop this.