Please, please consider doing a wwise sound package - I don’t care if it comes as an additional purchase or an upgrade:
I can somehow live with missing cockpit interaction sounds, but the engine sounds not being spatial when moving my head around is disappointing (for me at least). I am using Tobii and I am constantly gawking left and right and forward and downward. 
Also: Too bad the Stearman never came with floats…
Me, buzzing west-ish of Elko:
