Currently when somebody starts new section on talk page using "+" link, the summary equals to the written header. Therefore whoever wants to check it, must scroll on the talk page to such section or click on TOC to get there.
It would be more practical to have the summary in linked way (like using /* */ which produces "[[talkpage#topic|->]] topic") so user can directly go to the relevant section.
Suggesting the following form:
New topic: [[talkpage#topic|topic]]
where "New topic" should be new message eg. MediaWiki:Summarynewtopic or so.