Just to let you know, the link to the photo is broken.
Also, I'm not 100% sure what it is that you're asking.
If you want some theme suggestions, I would go with something that both elementary and middle school kids can dig.
Maybe a Pokemon theme, or a Marvel superhero theme, or even one based on one of the more popular games (Overwatch, LoL, Maplestory would be easiest).
Ideally, I would want the game played by up to 6 people (as I have up so 30 kids in my class).
I would have 2 copies of it, and each player would actually be a team of 2.
I would have all the cards be vocabulary related questions that the students would need to correctly answer before activating effects. Likewise they would have to repeat target vocabulary before each dice throw.
The game would be used at the end of the semester as a review activity after the exams have been finished.
Also, I find that sizing the board so that it can be printed on 2 A3 papers, laminated, then taped together works best, size wise!
Hope to see the results soon!