There are a lot of problems, including cracking cases. There are specialized threads on the forums. I read them.
As a former owner of the T series, I am also dissatisfied with the quality of this series. And as the owners of the new T series write, they have become even worse...
In fact, the E series killed itself with the idiotic USB-C power plug sticking out to the left. And all corner adapters for USB-C are extremely unreliable. If the power supply was via a classic, durable round and angled plug, or if there was power via USB-C on the left, right and back, then sales of the series would have grown much higher, expanding the target audience.
But overall, all good laptops are the same. Normal upgrade inside - 2 slots, 2 M.2. A complete set of modern ports in a convenient location. Mandatory RJ45 from 5Gbps. A good 4K@120Hz screen with a native contrast of at least 1500:1 and a high-quality tactile keyboard (for long-term typing and work) with a classic numpad - with a key travel of at least 1.8mm with elastic feedback.
There are very few such models on the market. And Lenovo E series is clearly not one of them for a long time. I see how these models have been collecting dust on the shelves for a long time - interest in them has been lost, just like in the T series.
And the most idiotic Lenovo line is the L series. Constantly with disgusting screens. And at an idiotic price.