Na schet dissolve idea zdravaya, mozhno ya svoyu ideyu podkinu?
So, make 2 objects - wireframe & textured, parent 1 to 2 (or vs. versa).
For materials - v transparency stavim gradient, privyazanniy k Null-object (dlya 1, for example, gradient inverted otnositelno gradienta for 2). Animiruem Null. Dolzhno poluzhitsa plavnoe (ot khvosta k golove ili po lyuboi osi - kak nastroit') zameschenie textured na wireframe, ili opyat' zhe vice versa. (Kstati, ya TAK delal, u menya poluchilos)
Regards