Should subscribers have to pay for Expansions?

It's stupid question, because subscribers will pay for it one way or another. Only thing they can decide, do they want more content faster, or same content spread over time.
Creating conent has it's costs, and game have to turn profit. If people won't buy expansions, BW won't make expansions, resulting in less content over time.
So question is: do you want more content?

Do subscribers pay for expansion in other MMOs??

I'll answer that for you.... yes they do.

Asheron's Call puts out new content every month with old technology and they apparently turn enough of a profit not only to keep going after all these years but they've even brought out a couple of expansions. So there's that.

Yes if the expansion is of this caliber or better

EverQuest: The Ruins of Kunark
Release date April 24, 2000

http://en.wikipedia.org/wiki/EverQue...uins_of_Kunark


In terms of the game, The Ruins of Kunark had a very different visual feel compared to the original zones in EverQuest: the color palette was more vibrant and many of the models used for the monsters were more detailed. This detail was most evident in the Iksar, a new playable race of lizard people introduced with the expansion.[1] The Iksar had a number of racial advantages, including the ability to stay underwater for longer periods of time, additional regenerative powers, and an armor bonus. This was balanced by the fact that they were hated by all of the other races in the game and that there were very few places they could go without being attacked. They also could not wear plate armor.

The Kunark expansion also increased the maximum level a character could attain from 50 to 60, and introduced a substantial number of new and powerful monsters for characters above level 50 to fight.[2] The most notable of these was Veeshan's Peak, a zone populated by dragons that was, at its release, declared to be the hardest zone that would be put into EverQuest. In reality, the zone quickly was surpassed by other zones released in further expansions, and is in fact not used often by players.

Another notable and deep dungeon is Sebilis, the lair of the undead dragon Trakanon, which required players to level past the previous limit and obtain improved gear introduced in the expansion.

The Ruins of Kunark was also the focus of 'epic quests', or quests for powerful weapons for each character class, which were introduced between the Kunark and Velious expansions as a source of further high-end content.

The Kunark expansion was unique in its method of distribution. A player would order the expansion from Verant's online store, and it was then shipped directly to the player's home. Unforeseen shipping delays caused many players to miss the expansion's official opening date. Thereafter, most EverQuest expansions were either available in local stores, or downloaded directly from Verant, many weeks before the official opening date.

Zones
Burning Woods
Cabilis East - Cabilis is the city of the Iksar
Cabilis West
Charasis (Howling Stones)
Chardok
City of Mist
Crypt of Dalnir
Dreadlands
Emerald Jungle
Field of Bone
Firiona Vie - Firona Vie is a High Elven outpost
Frontier Mountains
Kaesora
Karnor's Castle
Kurn's Tower
Lake of Ill Omen
Mines of Nurga
Old Sebilis
Skyfire Mountains
Swamp of No Hope
Temple of Droga
The Overthere
Timorous Deep
Trakanon's Teeth
Veeshan's Peak
Warsliks Woods[3]

short answer for a thread with 0 thought into it.

yes.