Well first off when I did custom install for the MEP 2015 trial, it tried to install some software called Simpliclean which has nothing to do with video editing (smells a bit like spyware).
Now that I've loaded the program, once again just like MEP 2014, the trial is missing parts of its functionality. No collages, no test images, no backgrounds, no Intros/Outros (some other stuff is missing as well, I think). I use solid-color backgrounds (mattes) often for my videos, and I can't test this part of the software. There's also no way to download these features. It's frustrating that they remove product features from the trial, it just make me more apprehensive about buying it.
I don't think I fully understand the Movement Templates. If I apply an effect, I can't seem to remove it. Say I add 3 'movement templates', I can't remove the one I don't want. Eventually I found it created a ton of keyframes. Is that the only way to get rid of the effect, by deleting all the keyframes and starting again? I then found I had to remove the keyframes from both the size/position area and also the camera/zoom area as well, depending on the effect.
A minor issue I encountered:
When I'm in the Effects tab and have various sub-menus open, I can't scroll up or down the menus with the mouse wheel. I have to use the scroll bar and drag it down.
On the positive side, I do like the way you can click a video clip and easily create a fade in/fade out or drop its opacity. And also being able to drag another clip on top to create a cross-fade.