!!!
By going thru this posts, and one hint given by guildwars official...I was able to come up with a possible conclusion.
Remember....this is only theory, so I might be 100% wrong.
You might need to read this slow and thoroughly in order to understand what I mean.
First...lets think of tree

(tree and guildwars?

)
Different races will symbolize different branches in a tree.
All the branches will meet on the same trunk(even though different location of the trunk). Trunk symbolizes quest. So we will build our new character until we meet the trunk.
The trunk will lead you to the root. The Root symbolizes the goal.
Therefore we go thru quests in order to achieve a goal.
Having this analogy in our mind...lets consider the hint given by officials.
-they said you can continue to play guildwars without expansions...and ""stay competitive""
which means character with no-expansion will not be less powerful than character with expansion(s).
Now, lets assume guildwars will release elf, orc, dwarf.
Different race will symbolize different deck of the card. In each deck...there will be different sets of cards(cards are skills).
Therefore there will be 4 different decks of cards.
Human deck, elf deck, orc deck and dwarf deck...all consists of different skill cards to make unique decks.
If expansion comes with elf race...I'll have a chance to build my elf deck.
Once branch reaches trunk of the tree, I'll have option to continue the quest with either human deck, or elf deck...and so on.
In PvP...person who has only human deck will still competitively fight with a person with human and elf decks.
==Idea==
If everything happens according to my theory...I have a great idea for 1v1 battle. Currently...if i have a monk character(focus on healing), I know I'll lose in any 1v1 battle. But what if I have 4 decks, and other person has 4 decks. We can do simultaneous battle of 8 decks(4 decks vs 4 decks simultaneously).
How do I control 4 characters simultaneously?
Well...we make guildwars real-time-strategy game!!!(but with only 4 units each side)
It will be like playing 4 heros in warcraft3 game.
Adding replay capability will allow us to watch how we did in 1st person/3rd person perspective after the battle.
we can perhaps call guildwars....
Real Time Massively Multiplayers Competitive Online Role Playing Strategy Game.
New genre= RTMMCORPSG ....lol
Sorry for such a long post