I'd probably place additional questions about more specific content after those 3

Deep Dungeons
Exploratory zones
Criterion dungeons
trials
raids
Extreme/Savage/Ultimate
Glamour/Dye system
Character creation options
etc...

The 3 given set up a good overall start for a general consensus however a list of more specific follow ups will help the people going through the responses figure out the specific areas more in need of tuning/work, while also saving the people doing the surveys time composing a wall of text explanation after each of those 3 responses to put context on the option chosen.