@Tamas_Papp that is basically the type of function I am using in my Dendriform.jl package to print arrays.
I think if you have a specific need for printing things in a package, it makes sense to just define your own.
Another complaint I had previously is the spaces that have been inserted into the syntax, as I explained here:
My solution was to modify the Base.show_delim_array function to get rid of the spaces. (not showarray)