I've just finished my first mission for the game and while overall I enjoyed it I found there were at least three things I would have liked.
First my Inquisitor can not run and so wondering around the map was taking forever as it's a large map for a PC that can not run (speed things up). So my suggestion is that each PC has a cooldown run ability in order to make large maps much easier to playthrough.
Second my mission was to locate 5 objects of importance which required me searching the entire map. This map was quite large and as I could not run it was taking a long time to search. Perhaps an Auspex ability could be created which would ping the nearest Mission Objective Item on the map, making the mission quicker to complete.
Third - It would be nice if the camera would rotate when the cursor hit the side of the screen instead of having to middle button click+hold. Perhaps Q and E could be used to do this.
Despite the three things I've listed above I thoroughly enjoyed my first play.