Excellent list, especially when the additional comments are added.

However, it seems to be very heavy on the costs side. The benefits side is also important.

So four questions ...

1. Are the benefits real? Too often we approve projects based on a dream of what the benefits might be.
2. Do we have a plan in place to monitor the benefits?
3. Have we included the effect of change in our benefits and costs? Implementing change often increases costs and decreases the actual benefits.
4. Is there a positive ROI, an overwhelming requirement or is this a strategic (sub) project? In real life, we sometimes don't have a choice. And sometimes the ROI applies to a complete strategy implementation rather than one project in the group (in which case, you definitely need to monitor overall progress and have a plan for changing horses in mid-stream). But otherwise, there better be a real ROI to justify the spend.

Glen Ford,PMP
http://www.vproz.ca