Pro Useful features
While most manufacturers won't bother adding features into their budget phones, Motorola has included part of their suite of apps. The display will light up when new notifications come in, and also when you pick up the phone even before you hit the power button. You can also set a schedule, so that it silences at night or in meetings (it syncs with Google Calendar) - however you can set it so that it will still ring when the caller calls twice in a row (this would imply an emergency situation).
Pro Decent displsy
While the resolution is a bit low, it is also smaller which means the pixel density doesn't suffer too much (245 pixels per inch is reasonable, although noticeably not crisp). Colors are decent, and viewing angles are great thanks to the IPS technology. Black levels could certainly be improved - instead of black it emits more light than most IPS displays as a dark bluish emission. It won't be the best display for steaming video, but it does well with the simple things.
Con Very bad cameras
The rear camera doesn't have a flash, and the 5MP sensor is inconsistent at best when it comes to color saturation. It is very slow to focus and take pictures, and pictures come out noisy. The front camera is VGA quality - very poor. At least you can launch the camera with a quick twisting wrist gesture which is nice.
Con Poor Wi-Fi speeds
The Wi-Fi chip in the Moto E 2015 only supports 802.11n and doesn't include 5GHz networks. The theoretical maximum is 72Mbps, but in real-world testing you will never achieve that. In tests, it scored up to 58Mbps which is less than 1/4 of the Moto X 2014 (290Mbps), and 1/8 of the Galaxy Note 4's (471Mbps) tests.