Very true that you don't really have access to zoom-pane type features. But they're also not really applicable. The integration is more about giving you a native "tabs and GUI windows" kind of feel, so that you can have multiple terminals open without needing to mess around with panes, tmux windows, etc. And of course, that gets provided in a persistent way (so that you can disconnect and reconnect at will) just like a normal tmux experience.
