Before delving into your questions about conversations, is there a reason you're using SetAppearance instead of Polymorphing? To answer your questions about polymorphing, yes, players can get some abilities from the form they shift into - this is controlled by the polymorph.2da. You can view 2das (and export them to text )with programs like
NWN ExplorerLooking at the first few lines of polymorph 2da, it doesn't look like the Shapechange version of the red dragon polymorph gets any breathing or other abilities:
2DA V2.0
Name AppearanceType RacialType PortraitId Portrait CreatureWeapon1 CreatureWeapon2 CreatureWeapon3 HideItem EQUIPPED STR CON DEX NATURALACBONUS HPBONUS SoundSet SPELL1 SPELL2 SPELL3 MergeW MergeI MergeA
0 POLYMORPH_TYPE_WEREWOLF 171 23 316 po_werewolf nw_it_crewpsp002 nw_it_crewpsp002 nw_it_crewps005 nw_it_creitem018 **** 18 **** 18 5 **** **** **** **** **** **** **** ****
1 POLYMORPH_TYPE_WERERAT 170 23 315 po_wererat **** **** nw_it_crewps002 nw_it_creitem018 **** 16 **** 22 5 **** **** **** **** **** **** **** ****
2 POLYMORPH_TYPE_WERECAT 99 23 314 po_werecat nw_it_crewpsp010 nw_it_crewpsp010 nw_it_crewps015 nw_it_creitem018 **** 20 **** 20 5 **** **** **** **** **** **** **** ****
3 POLYMORPH_TYPE_POLYSELF_GIANT_SPIDER 159 25 301 po_spidgiant **** **** nw_it_crewps018 nw_it_polyhid001 **** 19 **** 17 5 **** **** **** **** **** **** **** ****
4 POLYMORPH_TYPE_POLYSELF_TROLL 167 18 306 po_troll nw_it_crewpsp005 nw_it_crewpsp005 nw_it_crewps005 nw_it_polyhid002 **** 23 **** 14 5 **** **** **** **** **** **** **** ****
5 POLYMORPH_TYPE_POLYSELF_UMBER_HULK 168 7 309 po_umberhulk nw_it_crewpsp006 nw_it_crewpsp006 nw_it_crewps017 nw_it_polyhid003 **** 23 **** 15 7 **** **** **** **** **** **** **** ****
6 POLYMORPH_TYPE_POLYSELF_PIXIE 55 17 559 po_fairy nw_it_crewpsp026 nw_it_crewpsp026 **** nw_it_polyhid004 **** 10 **** 24 5 **** **** **** **** **** **** **** ****
7 POLYMORPH_TYPE_POLYSELF_ZOMBIE 198 24 354 po_zo_rot01 nw_it_crewpb005 **** **** nw_it_polyhid005 **** 14 **** 14 **** **** **** **** **** **** **** **** ****
8 POLYMORPH_TYPE_SHAPECHANGE_RED_DRAGON 49 11 198 po_drgred nw_it_crewpsp015 nw_it_crewpsp015 nw_it_crewps017 nw_it_creitemdrm **** 36 **** 30 10 **** **** **** **** **** **** **** ****
By contrast, the shifter form does get spell 239, or Dragon_Breath_Fire (looking in the spells.2da).
72 POLYMORPH_TYPE_DRAGON_RED 1670 11 198 po_drgred nw_it_crewpsp027 nw_it_crewpsp027 nw_it_crewps017 x2_it_emptyskin **** 48 **** 36 0 **** 29 239 **** **** **** **** ****
If you used polymorphs instead of appearances, you would scan for polymorph effects and check type, instead of looking at appearances.
Funky