We registered over 40 public repositories. Installing an artifact or registering a repository cause me the same pain.

Is using the local/enterprise .m2 repository for essential and checked libs a better alternativ?

Without $Find

ClassMethod Rotations(a As %String, b As %String) As %Integer
{
    
     Q $L($P(b_b,a))
}

ClassMethod Rotations(a As %String, b As %String) As %Integer
{
     Q $F(b_b,a)-$L(a)-1
}

No good Java Developer uses Maven Central. 80% of needed artifacts are missing, even your own created artifacts. Good Java Developers use there local enterprise repo and keep there project lib clean. Put com.intersystems dependencies into this und you will be satisfied until the need an newer version.