FWIW, I have a Fly Creek UL2 which is a similar design, and I'm NOT a fan of its gently sloping vestibule/doorway or its location on the end of the tent.

As mentioned, the long gentle slope creates a dripline to the waterproof floor of the inner tent, and makes it difficult to cook inside the vestibule in the rain - can't really leave it open due to drips, and closed the fabric hangs close to heat and flames, and of course the fumes.

The ends of a tent always being narrower than the sides means your vestibule-stored gear gets in the way during entry/exit, and you cannot reach the back corners of tent without taking your shoes off, so you end up storing everything cluttered around the doorway.

A more vertically oriented side entry with split vestibule (open one or both sides) solves these problems.