A couple suggestions I would have:
-have the timpani's dynamics vary with the violins. The most powerful part of the timpani is its ability to evoke an epic feeling in its listeners. With the proper use of soft and louud dynamics it could really make this piece shine. TLDR I would make the dynamics flow loud to soft to loud to soft etc with the violins.
-When the percussion soli comes in and the violins cut out is the perfect time for the timpani to REALLY SHINE. I would suggest that for most of the soli that the timpini be LOUD and POWERFUL. Add in some suspended cymbal crescendos that coincide with the timpani crescendos as well
-The final suggestion I would have is for the very end. The song title is Reveal, and the whole song does a great job building up a sort of mystery as to what is it? what is being revealed? At the very end of the song, instead of the small snare solo, have a 2 beat suspended cymbal crescendo into an orchestra wide BANG! a fortississimo accent by every instrument (in a major chord). It would help conclude the feeling of 'what is being revealed?' The BANG is like HERE IT IS!!!! BAM!!! : P
Overall I believe that it really builds well off of the last reveal. I still think it could really use that BANG accent at the end most of all to really give the song some closure (and fit extremely well with the title). It has a catchy toon and is fun to listen to. overall 7/10 4/5. good work keep it coming!