Unfortunately, I can't reproduce this on my end; all the models are present normally. Are there any other mods in the game's data folder? Perhaps something that modifies the appearance of heroes?
All_campaigns.data.h5u
All_campaigns.texts_ru.h5u
Alt_Town_Icon_by_fktifzobr.h5u
m30_rus_neutralcounts.h5u
m30_rus_nomainmenucombat.h5u
m30_rus_nosounds.h5u
revised_description_3_0_rus.h5u
Scene Recruitment.h5u
Skill_wheel_3.1.h5u
spell_description.h5u
TacticalInterfaceHD.h5u
TownSpecializations.h5u
UnlimitedAidTent.h5u
x10exp.h5u
Xazardous_Combat_3.1_Rage&Necro_Button.h5u