What's up ER? You make politics from RTW? Is that the new law of RTW Modding community? I'll never understand this topics you recently opened. While a Mod is not for sale as an expansion pack supported by Sega.. I don't understand what's with so many types of permissions and stuff like this.
I've always made my own rules and you know, but though, I like modding and agree with you in some way. But, if somebody takes my work and puts it within his mod silently (without credits) WHAT can I do. Call the cops? :P . That is vice-versa but I ussually ask everybody or at least I announce him that he'll get the honour to have his mod within mine and that I can offer everything he wants from my works in exchange. This is what community means: sharing resources, and this is mostly used and done, meaning that our community is working very well. However, nobody should ever include in his previews parts took from other mods making themselfes self-important to people who don't know the mod implemented.
I answered to what I understood of your topic.
I have been reading somewhere that Mundus Magnus couldn't be updated because of the premission issues of not being able to contact ngr... !... That's funny. My opinion is that as far as he hasn't said no as it's last answer the default answer should be yes as long as the modder gives credits, so, it's bad thing nobody modded MM2 to RTW 1.5 just because of this.

Farewell,
Arbaces.