Yes, that's a good idea. We currently have this text about how to ask a software recommentation question (plus some bits about answers):
Please read our question quality guidelines before posting.
Good software recommendation requests have two components:
- A purpose — a task to accomplish, a user story
- Some objective requirements — a minimum set of features
Please look around to see if your question has been asked before. It’s also OK to ask and answer your own question.
If you're asking for alternatives, be sure to describe the features you're using and why what you have isn't up for the task.
The “please look around …” paragraph is standard wording on Stack Exchange. I propose to move that to the end, and to start with the following wording that incorporates both the ideas you propose and what's already there.
This site is for questions asking for recommendations of software to accomplish a particular task, that is, “what software can I use to do …?”. Note that recommendations of tutorials, data sourced, etc. are off-topic.
Good software recommendation requests have two components:
- A purpose — a task to accomplish, a user story
- Some objective requirements — a minimum set of features
Please read our question quality guidelines before posting. Always state your requirements explicitly: even if you're asking for alternatives, we need to know which features you need.
(Plus the paragraph about answers, and the look-around/ask-and-answer boilerplate.)
While we're at it, we should tweak the tour page, which is seen by more people than the rather hidden “help/on-topic” page. It has the “don't ask” box right below the “ask about” box; the don'ts already cover most of your points, but we don't explicitly say “no data sources” (we do say “no hosting recommendations”), so we should add that. And the positive box starts with
Ask about...
Good software recommendation requests have two components:
We can't change that lone “ask about” line, but we could improve the second line. How about this?
Ask about...
recommendations of software to accomplish a task. Good software recommendation requests have two components:
I also added a paragraph about questions and a paragraph about answers at the top of the tour page, in the middle of the existing generic text:
Software Recommendations Stack Exchange is a question and answer site for people seeking specific software recommendations.
Good software recommendation requests have two components: a purpose (a task to accomplish, a user story) and some objective requirements (a minimum set of features). Please read our question quality guidelines before asking for a recommendation.
We request that answers demonstrate how the recommended product meets the requirement and is suitable for the intended purpose. Please read our answer quality guidelines before answering a question.
This site is built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed software recommendations for specific purposes.