...using wwf4, VS2010
a co-worker built an app that host WWF4, he did a good job and I generally trust his skills. The one annoyance is that I can't move more than one object on the designer surface at a time, which means modifying the layout of a moderately complex workflow is a major PITA.
He says that he tried, but came to the conclusion that you could not do anything with the wwf design surface. He's good and I trust his words, but I'm older... anything can be done.
what are my options for implementing 1. drag and select 2. multi-object move via the keyboard
Your co-worker is right, there's no support for it at all. The designer will be greatly improved with .NET 4.5.
Read this: What's New in Windows Workflow Foundation in .NET 4.5
Multi-select
Multiple activities can be selected at one time, either by dragging a rectangle around them (when pan mode is not enabled), or by holding down Ctrl.
Multiple activity selections can also be dragged and dropped within the designer, and can also be interacted with using the context menu.