This survey needs more questions to be a proper linguistic survey.
For example, "terms specific to this game" is too broad. Instead you should have a few questions asking about specific facets of the game that commonly have different usages.
As an example of this, in FFXI classes that deal damage as their primary role as called "DD," meaning "damage dealer."
In EQ1, "DD" means "direct damage," referring to a type of spells that does a flat amount of damage rather than a debuff or damage over time.
In FFXIV and many other games, classes that deal damage as their primary role are instead called "DPS" or "Damage per second (classes)"
The reasoning behind this difference in terminology is that FFXI's pace is much, much slower but the damage output of individual hits is about the same between XIV and XI currently (it's off a little, but a 2.5k hit is a strong hit in both games right now) thus calculating "DPS" in FFXI isn't even worth doing, while faster paced games like WoW, EQ2, and FFXIV pretty much require it (the former two having ridiculously high damage per second numbers)
Also your questions make reference to "your game" but you can select multiple options for #1, making the questions misleading as to which you're talking about.
If you're limited to how many questions you can use, you can always create more than one survey.
You could make a whole survey on basic terminology:
1) Which game do you play primarily?
2) What does your game call the location where the most buying and selling takes place?
3) What does your game call the class role that deals damage?
4) What does your game call the most common means of quick transportation?
5) What is the name of the (current) highest tier "raid"?
6) What constitutes a "raid" in your game? (e.g. how many players)
7) What do you call your avatar?
8) How does your game refer to progression after maxing out your level?
9) What does "BiS" mean to you?
10) What roles does your game contain?
It might also be interesting in targeting "carry over" terms.
For example, many FFXIV players come from FFXI, and thus use terms from that game (DD, Raise, etc.)
Other players come from WoW, EQ, etc. and thus use other terms such as "DPS" and "Rez" to refer to the same thing.
The applicants age and # of years spent playing MMOs might also have an effect on their answers. I find older, more "veteran" players such as myself have different vocabularies than those that started later.
Someone who started in, say, 2003 is less likely to use the term "toon" than someone who started in 2009, for example.