Do you use Checklists for productivity?

We have developed an Online Business Startup Checklist and wonder if it is user friendly enough.

What kind of features would you expect and welcome?

Our checklist is in PDF, is clickable and savable. ( You can also print it.)

It's comprehensive since it has more than 400 checkpoints on 21 pages, links, guidelines and so on.

You can also find it on my profile @Biizly