
What's there to be changed about this sentence? (since there's a "@change" tag)

Looks fine to me.

I think the question mark is meant to show rising intonation, implying "what do you think?". But I don't mind losing it if people feel strongly about it.

I think there is a legitimate question as to whether the Japanese sentence is actually 'question like' or whether it is simply intended as a polite brush-off. On the whole I like it as it is, though.