theFIZZYnator
Inkling
Okay, so the passive modifier is a no-go.
The question indicator is probably redundant or useless in full sentences, but would have a useful function in sentence fragments and one-word questions, like "Me?", or "The one that's on the computer?". It could also prove useful when emphasizing the exact aspect in question, as in "You want me to go there?" (when the speaker doesn't question that he/she needs to go somewhere, but is questioning the place required to go), or "You want me to go there?" (when the speaker unexpectedly finds out whose command it was), or "You want me to go there?" (when a newbie Octoling is surprised with her first assignment).
The [-i] ending for adjectives could be incorporated if you make a rule, such as "if the adjectivified noun ends with a short vowel that isn't , use [-i]; otherwise, use [-na]." I'm not too thrilled on mirroring Japanese this much in the Octoling language, though; the ingame setting is supposed to be tens of millennia after the inexorable demise of Japanese.
By the way, the sentence structure would be: (q.part is short for question particle; all verbs are infinitive unless otherwise notated; subject and object markers notated by S and O)
You want me to go there.: [You] S [me] O [there] [go] [want].
You want me to go there?: [You] S [me] O [there] [go] [want (interrogative)]?
You want me to go there?: [You] S [q.part.] [me] O [there] [go] [want]?
You want me to go there?: [You] S [me] O [q.part.] [there] [go] [want]?
You want me to go there?: [You] S [me] O [there] [q.part.] [go] [want]?
You want me to go there?: [You] S [me] O [there] [go (interrogative)] [want]?
