1. Terminal emulators that feel 'native' are ubiquitous. Sure, there are also a lot that have idiosyncratic UIs, but I'm not generally using those -- my go-to when working within a GUI environment is xfce4-terminal, which is about as native as I can imagine, given that I'm using XFCE as my primary desktop environment.
2. Sensible defaults may be good for new users, but I already have my terminal emulators configured exactly as I like them, and my benchmark for switching from one tool to another within the same category isn't how welcoming it is to novice users out of the box, it's how easily I can adjust its configuration to match my long-established preferences. The "zero configuration" philosophy is actually a detriment here, as it leads to configurability being obscured to some extent.
3. When I tested it, its performance was worse than xfce4-terminal, both objectively and subjectively. Its memory consumption was higher and it felt laggier in responding to input.