In recent months, the most frequent close reason on Language Learning SE seems to be that questions ask for explanations about specific points of English vocabulary or grammar by learners of English. Such questions are off topic here but can be answered on English Language Learners Stack Exchange. However, we don't have a specific close reason for that, just a more generic one with the following text:
Questions about grammatical rules or specific characteristics of a language are off-topic here. A language-specific site is the appropriate place for these questions, or if such a site does not yet exist, you can propose one on Area 51.
This close reason only suggests closing but does not allow reviewers to suggest migration. The large majority of questions that have been migrated away, especially in the recent past, have been migrated to English Language Learners Stack Exchange (even though in the last 90 days, 50% of them were rejected). (Since the start of the public beta phase, one question was migrated to Chinese Language SE, two to English Language & Usage SE (where migrations often get rejected), one to Spanish Language SE, one to Literature Stack Exchange, two to French Language SE, five to Linguistics SE, one to German Language SE and one to Latin Language SE.) I would like to propose an additional custom close reason with the following info:
Questions asking for an explanation of a specific vocabulary or grammar point in the English language.
Usage guidance (for the review queue):
Questions asking for an explanation of a specific vocabulary or grammar point in the English language are off topic here. When this type of question is asked in the context of learning English as a second or foreign language, the appropriate site for this is English Language Learners Stack Exchange. (If the question is a proofreading question, it should not be migrated to English Language Learners.)
Close description (to be displayed publicly):
This question was closed because it asks for an explanation of a specific vocabulary or grammar point in the English language. It is currently not accepting answers.
Post owner guidance (goal: "Provide meaningful actions a user can take to either get their question reopened or have a more favourable outcome in the future.")
As currently worded, this question asks for an explanation of a specific vocabulary or grammar point in the English language in a way that makes it off topic on this site. A more general question about methods or resources for learning or teaching the relevant type of vocabulary or grammatical construction may be on topic on Language Learning Stack Exchange.
Privileged user guidance (goal: "Provide guidance for users with the reopen privilege so they can constructively engage the post owner and reopen the question if appropriate."):
In order for this question to be on topic on Language Learning Stack Exchange, it should ask for methods or resources for learning or teaching the relevant type of vocabulary or grammatical construction instead of asking for an explanation of the specific language feature.
This custom close reason would allow reviewers to suggest migration to ELL, whereas the current close reasons can only suggest closure. (Migration can currently only be suggested in a comment.)
What do people think? (1) Do you think we need this close reason? (2) If yes, does the proposed wording work for you or can you suggest improvements?
Note: We currently have just one custom close reason, in which the close reason as such, the post owner guidance and the privileged user guidance are identical.