i find the temporal paradoxes some of the most thought provoking ideas in all of Star Trek. i'd love to see this theme explored! i also thought that The Traveler would have been a fascinating character to develop: the Hows and Whys of what he is able and wont to do...
as far as Q is concerned... i've wondered if the TOS episode: Squire of Gothos wasn't a sort of inspiration for the idea? Trelane seems like a Nascent, Inchoate, Immature Q {not that Q was Mature, in act or practice}. at least a Q-ish Cousin, of sorts?
it could be argued that Trelane displays the same sort of Impudence that Q is famous for, and elicits a similar reaction from the Crew, as in these quotes (from memory alpha wiki):
"
Do you know that you're one of the few predator species that preys even on itself?" -
Trelane, to Kirk
"
Wait! I won't have this! I haven't dismissed you yet! Stop it!! I won't have this!!"
-
Trelane
"
I object to you. I object to intellect without discipline. I object to power without constructive purpose."
-
Spock, to Trelane "
Why, Mr. Spock, you do have one saving grace after all—you're ill mannered!"
-
Trelane, in response
I love the idea of exploring Timelines/alternate universes/permanency, etc... Great Thought!