Forced Diplomacy (M2TW/Kingdoms)
This was something made available in RTW but apparently nobody has written one for M2TW, so here it is.
It forces the AI to accept any diplomacy offer/demand. NOTE: it does not work with Bribes.
To use it just click the advise/help button on the diplomacy scroll. This activates the advisor who will tell you what to do: just click the "show me how" button (click on the advisor portrait to activate that button). If the advisor text isn't appearing then try toggling its text/speech button.
Clicking the "Show me how" button will activate Forced Diplomacy mode. This will force the AI to accept any offers and demands made while this scroll is open, except for Bribes. Sometimes they will refuse because you have offered nothing in return: offer them something, however small, and they will accept. Bribes and Gifts do not count: you must Offer them something (anything) and Demand something other than Payment/Tribute.
There are a couple of threads/posts about the place explaining how to do it for RTW (e.g. this one). The M2TW solution is almost identical.
I originally wrote it as part of my Total Diplomacy submod for Third Age TW, which also includes one or two other features not included in the files and instructions here.
The attached file is for the Kingdoms grand campaign but you can use the instructions to enable it for non-Kingdoms M2TW, Kingdoms campaigns (Brittania etc.), and mods of any of these.
You will need to have unpacked files. This post explains it for Kingdoms.
This is save game compatible.
See this post about a non-advisor (campaign script) alternative.
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