Just to clarify, the overall theme of Daniel was a (hoped for) Maccabean victory over Syria, which does imply a Maccabean king. But the supernatural imagery in Daniel 7:13 is so vague that the author could have intended a subsequent permanent Davidic lineage ruling at some point. The passage is ultimately hyperbole representing independent rule from Jerusalem rather than being subject to other nations, so there's no point trying to take it literally.
(Note that Daniel 8:17 refers to the pseudonymous author of Daniel as "son of man", which could imply that the anonymous author of Daniel thought of himself as the potential king, though use of the phrase there is probably just coincidental.)