When I use another object in the .net-Framework in C# I can save a lot of typing by using the using directive.
using FooCompany.Bar.Qux.Assembly.With.Ridicul
If you just need to create an instance of your type, you can store the name of the long namespace in a string:
$st = "System.Text" $sb = New-Object "$st.StringBuilder"
It's not as powerful as the using directive in C#, but at least it's very easy to use.
using