Part of our windows client application 'Family Tree Builder' includes a tree consistancy checker, where you can get consistancies as you described. You are welcome to export you tree through GEDCOM and import it there, and check your tree for inconsistancies.
Excellent. So you have the functionality already! I'll look forward to seeing it ported to the website, so that I can use the 'fix it' link/button there as well (rather than seeing the errors in the software, and fixing them manually on the website).