Hey IdolNinja.
First off, thanks bunches for this tool - very useful and fun!
There's one issue however. I had made my replacement textures and ran the batch files and to my puzzlement all my custom billboards were showing up fine, but the 128x512 huge rotating billboards were still the originals. After wasting an hour or so tearing my hair out (as I naturally assumed I did something wrong - but I couldn't for the life of me figure out what!) I happened to glance at the file dates in the textures subfolder and noticed that the file dates hadn't changed from the originals. So I double-checked the batch file.
Anyway, long story short - you need to add the following lines to the "Pack_and_send_all_work_area_dds_files_to_your_mod_release" batch file or the poster billboards won't get updated when people run your tool:
SR3RepackTextures lcd_large_brands_a.cvbm_pc
SR3RepackTextures lcd_large_saints_a.cvbm_pc
SR3RepackTextures lcd_large_syndicate_a.cvbm_pc
Thanks again for all the great modding you do. You've added many hours of fun to my SRTT playthroughs.
PS Any news on the Gentlemen of Steelport GUI ?