While I like the idea of the current enchantment combo, I don't know that it's really necessary. Privileged Position already protects your stuff without the need to get out 2 cards. Further, turning all of your lands into enchantments opens you up to instantly losing the game to something like Spring Cleaning, although players are more likely to play mass wipes that will also destroy or exile their permanents due to Enchanted Evening's symmetry. Speaking of, you can try to take advanatge of that symmetry in other ways like playing Azorius First-Wing as an unblockable griffin, assuming you don't mind going into blue. Otherwise, I'd still try to upgrade the griffins here to be a little faster and more impactful. Diving Griffin and Resplendent Griffin have the potential to be better than Sunspire Griffin, depending on the final build. Fearless Fledgling and Griffin Rider are both aggressive options to shore up the 2 slot in a way I think would be more impactful than Crashing Drawbridge or the currently underwhelming Pearl Medallion. Finally, Wanted Griffin may be better than Senate Griffin at 4, again depending on what your game plan ends up being. Mutavault and Metallic Mimic are some less budget friendly options that could help the tribe's limited card pool.

As for anthems, I usually prefer the 2 cost options to the 3, although I do like Always Watching. Honor of the Pure is the vanilla option while Rally the Ranks or even Obelisk of Urd could fit in a tribal shell. One thing I thought of while looking at the high number of white pips making the Medallion worse was that you could lean into that and go for a mono-white devotion build. Some anthems like Flowering of the White Tree and Benalish Marshal already fit well in such a deck. You'd definitely want a playset of Nykthos, Shrine to Nyx and some sort of payoff for the extra mana like Elesh Norn, Grand Cenobite, Walking Ballista, or whatever other bomb you prefer. You'd also want something to play on 1 for that strategy. War Falcon has some synergy with Griffin Rider, Esper Sentinel is a generically powerful draw engine, and Weathered Wayfarer is a classic way to find Nykthos. War Falcon also brings to mind the idea of leaning more into broad flying support like Sephara, Sky's Blade and Rally of Wings, although I acknowledge going down that path could severely dilute the tribal identity of the deck. One final approach I can think of is pivoting to focus on lifegain to use the Griffin Aerie in your maybeboard. You'd definitely need cheaper ways to gain life than True Conviction, especially since I think it's already one of the weaker cards in the deck. The reality is that you'd probably be nudged towards splitting the griffins with angels to take advanatge of Angelic Accord, Bishop of Wings, Speaker of the Heavens, and even Archangel of Thune. Outside of that, the options are more limited. Maybe mass lifelink could be made cheaper with Metallic Mimic plus Envoy of the Ancestors or Abzan Battle Priest. This is the only route where I actually see Path of Bravery being worth it.