I prefer A flamevell build as well if my goal is to abuse Stardust Dragon or any level 8 Synchro Monsters for that matter. Normally I would go through the trouble of a Rate and Fix on this deck but Im just not going to bother for 2 reasons:
1. Why bother if what I say will not be listened to in the first place as is basically stated in Ryan_N13's Post.
2. I don't like Assault Mode Decks or Decks that run Majestic Dragon with the Assault Mode as that tends to spell disaster for anyone running it.
If you can make it work great but I just don't see it. Later.