Hm, well I assumed that uninstalling OHII and putting it back in would require a restart... as well as some others. I thought it was general 'best practice' to do so.
Well, current (now updated) list as follows:
Magnum Opus v0_0_1
MO Patch 2
FX Update_0_0_16_2
FX Update 16-2 UHS fix
Depth Keeping Problem UHS patch HB 1_0_0
Shadow Improvement LR
TDW DC Water Disturbances (not sure if that's working or not tbh, sure didn't help me escape the other day lol)
Arclight MRP
Critical Hits 1.1 Torps
Critical Hits v1.2 (deck gun)
OHII Lite
OHII Campaign Radio Messages (still never seen one in the old SH4 style 'radio/mission message' format as described in the thread for that mod, and don't know the stock messages well enough to know the difference. Never seen a red message as they're meant to be.)
Dynamic Environment 5.0 Basemod
DE Atlantic Floor V2.1
DE Undersea (Temperate)
DE Sounds V2.1
DE Waves (Normal)
DE Sleet for Winter Campaigns
Nozaurio's Skin (Standard No Emblem) v1.0.0
Stoianm Upgrade Available Mod
Equipment Upgrades Fix 1_2 by TheBeast
Sober's smaller water drops
KSZ hull Wetness for Uboats + Conning Tower & Deck
As an aside, can anyone tell me if the radio antenna on type 7b raises at periscope depth with stock? It didn't raise on the starter sub, and I'm pretty sure it didn't on the 7b (assuming that's what I was given) before I modded it. I didn't think Stoianm's mod added or changed any equipment, so I can only assume that the Equip Upgrade is responsible - but disabling it in JSGME still leaves the antenna raising, and the fix gives me a weird buggy stick poking through the hull at depth (see mod thread). Adding the latest TDW UI update directly after MO patch 2 took away all my map contacts so I've dropped that for now.
If there's anything wrong with the above list I may just go mad! LOL