Re: Alumni Interviews…Alumnis are volunteers. First there have to be alumni in your area. I do interviews but there are only so many I can do so not everyone gets one. I choose or get assigned interviewees based on proximity. You don’t hear back because the students are on a list and an alumni could select to interview them any time during the application period.
Also if you look at the CWRU common data set, “Level of applicant’s interest” has gone from Important to Considered as of last year.
Other ways to show interest:
http://talk.collegeconfidential.com/case-western-reserve-university/2014835-how-to-show-interest-in-cwru-2017-2018-edition-p1.html