Steven Zahm@ Eve
You could, but the result would be anything but pretty. Others have successfully added it only to remove it again. The design of Tile is based around the fixed width and height. Adding a variable height to the mixed will create undesirable effects. Tile Plus instead relies on the user to simply click thru to the single entry view of the template where both the bio and notes are displayed without requiring further user interaction.
If you’d like to give it a go anyway… I’m not sure which post you’re referring to, but yes the template structure has changed a few times throughout the years. The next release of Connections take the current iteration of the structure a step forward by easily allowing one to override the template files in an update safe manner. Any back on topic … the 2012 instruction probably still apply, just that you need to make the changes to the card.php file rather than the template.php file. And that the template files are now in the plugins folder rather than the connections_templates folder since template are now full fledged plugins. So, the folder for Tile Plus will be connections-tile-plus.
I hope that helps.