Contact Information in Frontend

Hi, I'm using Joomla 3.4 with JEM 2.5.1.
While displaying the full event informations (event, venue etc.), JEM can also show a contact information in an separate line. However, this contact information is reduced to the individual contact's name and landline phone no.
There has been a similiar question in this forum some months ago ( www.joomlaeventmanager.net/forum/jem-2-1-x-for-joomla-2-5-joomla-3-community-support/9233-contact-information-e-mail#19348 ), but the answer was related only to Joomla's contact settings.
JEM, I think, displays momentarily only the contact's phone number and its name, which is linked to the full contact information from com_contacts.
For further versions of JEM it would however be nice to create a possibility for displaying more contact details (i.e. photo, email oder mobile number) in the full display of the venue.

you surely mean JEM 2.1.5

the contact information is not only for the venue, it's more linked with the event, but you are free.

and you can contact persons who are not yet registered users (with non-public email)

My problem may be special. My site displays a lot of third-party events that need subscription i.e. on other sites or by phone. So Joomla's or JEM's standard subscription facility isn't very helpful.
There is no problem in including those subscription information in the event topic, but I need an option for subscribing third-party events directly via the contact information or via the "subscribe" line in the event's full display.
By the way - it would be fine if JEM had options for displaying the contact photo, the email adress and the mobile phone number...