Hello aufish
Unfortunately, we can't consider individual mod users and leave the most people with bugs.
Pure house mods, which only move boxes, textures or furniture, will not be broken by updates so quickly, mods with lots of scripts or changes to quests more likely.
So I guess your mods will be a bit more extensive than pure house mods.
The fact that mod makers don't take care of their works later on is unfortunately also known at Skyrim.
(which is annoying after updates of the game or after changes of a basic mod)
Loading sequences are actually determined by our technical manager. You shouldn't change the ESM files on your own.
(and yes, we also change the update.esm)
You can choose older versions at your own risk, in Steam: under Enderal - Properties - Betas, there are currently still versions 1.5.6.0 and 1.5.7.0.
However, this is not a long-term solution, as they will be replaced at some point.
It will not be possible to switch off the update completely, because otherwise already fixed bugs will be reported, which we will not be able to take care of anymore.
What you want is now only available with pure offline games and not with Steam.
So this Beta-option only makes sense if you have an outdated mod and want to empty containers or something like that.
There may not have been many updates lately, but the last one contains more changes, which meant more effort.
If you have the impression that the last update caused more problems (for you), I'm sorry,
but you will also benefit from the fixed bugs when you reach these places.
PS:
Your mod "Melrode Monastery" on nexus is apparently in the works, there the problems are probably known already