Merge model contributors should be aware of at least these points to avoid embarrassment:
Proper notation of merge sources
Appropriate permissions
Particularly in point 2, there are some selfish individuals who disregard permissions such as the prohibition of commercial use, which are not allowed by the merge sources. No matter how excellent the model merge is, this is unsightly.
January 17 Update:
The following is the initial article I posted, but it seems inappropriate considering the Illustrious license. (Thank you, oritatami_neko, for pointing it out!)
From NoobAI-XL Notice