[Greg Titus]

This scenario brings up another interesting UI issue, actually: assuming we support leveling multiple projects together in the way that you'd want in this example, there are two different interpretations of "resource 1 50% available".

(1) as intended in this thread so far, where the resource can simultaneously work on tasks in two different projects because (s)he is 50% available in each, or
(2) the resource really only works half-time, in which case seeing two different projects with 50% availability means that we'd want to have the resource somehow alternate (or in some other manner, interleave) tasks from each.