Thanks JR, that idea had occurred to me. I'm still thinking about it, though my concern is that by doing that, I'll wipe out a lot of the warmth these shells offer. That's what I really like about them. Still, I may try it on another kit down the road.
The inherent low-end punchiness and warmth of those shells is a function of their flexibility and low pitch. That won't disappear. If you use the FG resin, you will gain some attack because high frequencies will be reflected by the smoother surface, rather than refracted by countless large, open wood pores. More importantly, you reinforce a somewhat weak shell. You see, this is what made vintage Tama ImperialStar's so great, the addition of their "Zolacoat" epoxy coating over 9-ply lauan with rerings. The rerings raised the pitch of the shell enough to give the tone more "cut" and also stiffened it, while the Zolacoat added some attack, but the drums were still warm and punchy. Some of my favorite drums EVER! Conversely, lauan usually makes for lousy snares, and Tama was smart enough to NOT make matching wood snare drums.