That is to say, we're ignoring the Secret Lair decks (with all apologies to that one fan of Everyone's Invited )
Increase activation frequency with mana acceleration or untap effects to turn Thrasios into a primary engine rather than a secondary outlet
Arcades Sabboth looks a bit rougher around the edges, and I personally think its the one that looks the least like its color identity
Sure, a 6/7 vigilance reach dork is a pretty limp threat but if you view it as a free card then bring it on
Tidus, Yuna's Guardian and its Final Fantasy Commander deck took ownership of moving counters and are very impactful with great planeswalkers, sagas, and a host of other cards beyond +1/+1 counters
You may want to add in a few other Fog effects to make sure that people cannot gang up on you and swing at you multiple times forcing their way past his tap ability