I like the idea, but I thnk you have a lot of high costed dragons (I know: they are dragons). You could focus on the low cmc dragons, adding more Sumbering Dragon and Sprite Dragon to make the flickers more consistent and efecctive with Ozolith. Taking out Sarkhan the Masterless and 1 Glorybringer to this could work.
Problem with that is there are only 5 cmc <=3 dragons in the game (the ones I'm not using being
Dragon egg and
Sarkhan's Whelp) and the cmc =4 are hit and miss. I could add
Adaptive Automaton and I may do so down the line. I agree with using
Slumbering Dragon for better blink consistency but he does so little else.
Sprite dragon is pretty cool but loosing all its counters if you don't have Ozolith feels pretty bad. He may go to 4 at somepoint.