You are correct JTK. Pulse textures can not be changed, only color and size.
I have found of Masao's SFM designs that people either like them or they don't. But it is kind of cool seeing these ships going up against each other in Bridge Commander, especially the Romulan War era ships, kind of a change of pace.
I am also striving to make the HPs for these ships as close to the descriptions given by Masao on the website. Power systems and shields are not so advanced on these ships and managing power distribution and repair are necessary during combat, which I believe was one of the the original intentions of Bridge Commander. This aspect of the game, again, is one of those things that people love or hate.
Thanks to everyone whos has given me support during this effort, hopefully I will finish soon and make the models available to all.