1) For security and stability reasons, Apple doesn't provide us a way to do what you're asking for here. Perhaps at some point in the future, and perhaps in the meantime we can do other things that at least alleviate the issue.
2) I'm not in a position to make a promise, but I believe we will be addressing that soonish. If you haven't already, please email the request in to support at
omnifocus-iphone@omnigroup.com so that it will get tracked, and if we're not already planning to do that, it will get raised as an issue.
3) A good thought. Again, please email it in to support so it will get tracked appropriately.
4) We've certainly had requests for templates in the past, and there's a lot to be said for the feature. Again, email support to lobby for the feature, so it will get added to the list of people asking for it, which will help us prioritize the work.