Here is a summary of mod technical compatibility with improved anvil (v6.5) based on recent playthrough I've done as well as input from lroumen and edboy. Obviously additional content will result in additional XP and gold and could impact the difficulty curve for your playthrough. There may be some hidden bugs that weren't caught in the testing, so your mileage may vary!
From Critto around mod integration and maintenance - essentially you're on your own for support!
Reminder to the players to be aware that this still might produce technical issues in which case the recommended course of action would be to uninstall the offending mod because the task of maintaining compatibility is a hard one to perform with the very limited time we have
Towers of Deception (v3.2)
- Compatible, I consider v3.2 which has an IA specific fight in Ch 7 to be “canon” with IA
- Provides high XP bonus to party
- One OP item that should be sold and few minor treasures (RoP +2)
- IA specific encounter in Ch 7
Alabaster Sands (Athkatla Grounds)
- Compatible
- Small amount of XP and quests, no conflicts with main mods. One or two early available items that may be OP when gotten, but nothing game breaking.
Bridges Block (Athkatla Grounds)
- Compatible
- Small amount of XP and quests, no conflicts with main mods. Some stat modification books and one or two vendor items that may be OP when gotten
- Some spell scrolls (wizard lvl 2-5) that I ignored
Southern Edge (Athkatla Grounds)
- Largely compatible, minor incompatibility potential
- Small amount of XP and gold.
- Some OP vendor items that should be avoided or may impact scripts and should be avoided
Tangled Isle (Athkatla Grounds)
- Compatible
- Small amount of XP and gold.
- Some OP vendor items that should be avoided or may impact scripts and should be avoided
- Aquest reward item giving permanent physical damage resist that should be ignored.
Oozes Lounge (Athkatla Grounds)
- Largely Compatible, minor incompatibility potential
- Small amount of XP and gold. Some OP vendor items that should be avoided.
Journey to Whin Hill (Athkatla Grounds)
- Slight but manageable incompatibility,
- Small amount of XP and gold.
- Some OP vendor items that should be avoided.
- New NPC (multi T/C with custom kit) that could impact scripts and may impact IATweaks kit reassignments, which can be overcome using EE keeper. Kit and NPC stats are surely aimed at RP so unlikely to be impact a min/max IA style party.
In Love Undeath (Dreadful Tales)
- Marginally incompatible, do not recommend with IA
- Small amount of XP and gold.
- Adds a new NPC and new class that could impact scripts and may impact IATweaks kit reassignments, which can be overcome using EE keeper. New NPC was not tested.
- Some OP items for sale by vendor
- Some dialogue bugs with Cromwell (likely due to personal install, I think executed well in mod)
Juniper and the Stone Leech (Dreadful Tales)
- Not tested, TOB content
Bloodied Stings of Barovia (Dreadful Tales)
- Not tested
Innershade (Colours of Infinity)
- Not fully tested, compatible
- Small amount of XP and gold.
- Opportunity to have a “parasite” companion with dialogue �“ unclear whether longer term benefits/conflicts
- Several powerful items for sale by vendor that should be ignored
The White Queen (Colours of Infinity)
- Compatible, one or two fights that are improved using IA scripts.
- Small amount of XP and gold.
- Provides a minor innate ability bonus to PC (not fully tested), such as blur, that shouldn’t impact balance
- Some OP items can be obtained via combat that should be ignored
I Shall Never Forget (Colours of Infinity)
- Compatible
- Small amount of XP and gold.
- Provides a minor innate ability bonus to PC (not fully tested), such as blur
- Some OP vendor items that can be obtained that should be ignored
Tales of the Deep Garden (Colours of Infinity)
- Compatible per Ed Boy/Lroumen.
- Gives around 45k XP
- One fight improved using IA scripts. Some OP rewards that should be skipped.
Yvette Romance (Colours of Infinity)
- Not tested. Compatible per lroumen.
Foundling: Between the Shades (Colours of Infinity)
- Do not recommend with IA
- Adds a new NPC and new arcane magic class that could impact scripts and may impact IATweaks kit reassignments, which can be overcome using EE keeper. New NPC was not thoroughly tested in combat.
Skie: The Cost on One’s Girls Soul
- Compatible
- Small amount of XP and gold.
- Adds one or two new NPCs (not tested) and a potentially forgeable OP item that should be ignored.
Ellistraee’s Song
- Do not recommend with IA
- Provides significant XP, many OP items, a new kit which could impact IATweaks kit reassignments, and an OP innate ability.
Of HeirloomsAnd Classes
- Do not recommend with IA
- Several issues with Cromwell’s dialogue files.
- Some items were OP.
Heroes Thieves and Moneylenders
- Not fully tested, do not recommend for IA
- Install issues on component 4 due to particular script modification in IA
- Bank and interest component can impact gold balance in the game
- Bugs were observed in several quests, though I did not test all components of them
G3 Anniversary mod
- Compatible
- Small amount of XP and gold.
- One or two new items which are not OP but should likely be avoided
Fishing for Trouble
- Not tested
Test Your Mettle
- Not tested
Skip ChateauIrenicus
- Partially Compatible, not recommended beyond 6.5.
- Several new encounters in this dungeon in some of the development space that may be missed with this mod installed.
Djinni companion
- Not tested