It shouldn't really be a problem. The simple solution is just to ignore it completely until it comes time to release the mod, and only then spend 10 to 15 minutes running through all the forms using TES4Edit to delete changes to things not part of Rimmen.
It will help if you use the same prefix for everything in your mod, like I use ANQ for everything from creatures, to ingredients to AI packages. Because TES4Edit lists things alphabetically, you can then easily spot edits to things that are not yours at a glance.
I would not bother with it now, because when make a mod dependent on another the cs always makes alot of wild edits. The SI thing just creates a few more on top of that.
btw, which interior cells are using those lights? I might as well change those. For players playing a mod using SI objects without having SI installed the items just vanish along with the forms. Missing mesh exclamation marks only occur for missing meshes, not missing forms. Elsweyr isn't SI dependent because the few SI objects I used won't be missed if they are completely absent.
My theory is wrong, as Johnn123 uses SI, so seems it's really this wild edit thing. We're using ANQrimmen as a prefix, all statics in the first ESP grzesiog1 sent me were named this way and I continued it.
I did a list of the FormIDs which I get error messages for:
570E7 1f382 1a16d 45764 135ed79aa5 1f384 1a1a3 13564 1354b59b56 1f382 1b01c 135b2 1351b4feeb 1f390 1f385 1383c 121051f385 50bc4 43de1 15641 11f9d ...
Had about 5-10 more errors, but stopped recording, as the last 10 or so in the list and all following were problems with GREETING message. No way to go around this ones, except you use a vanilla Oblivion.esm, am I right?
Here's how I found the cells:
- first just loaded Oblivion.esm and Elsweyr into the CS, nothing else
- then opened Oblivion.esm with Tes4Edit and searched for the FormID
- back into CS with the info I got in Tes4Edit, searched and selected the item
- right clicked the item and then the 'Use Info' menu point; it had all cells that were wrong