General changes for all 3 modules.
The expansion was made before Intimidate was available, therefore actual Intimidate checks are, really, persuade checks with a few modifiers. The scripts are x1_intimdt_easy, x1_intimdt_med, x1_intimdt_high but they run a custom check of Persuade + strength modifier, and modifiers like +1 if Half-Orc, armed with a weapon or have the Thug feat.
We could reliably replace these checks with proper Intimidate checks though as a fix/feature.
Also looking through the chapter 1 conversations there are several errors where there are branches for Persuade, Persuade - Lie, Intimidate, etc. but there's no conditional script attached meaning the top option always happens (usually success). Example in q1hkobold for instance. These probably need checking extensively and fixing up.
Adding Mischa back as a companion; see Overhaul Mischa Waymeet.