If you are planning to use Electronic strips, bear in mind your existing functions.
First, the primary source of information/control decision is outside on the apron and the manoeuvring area - will the electronic display reduce the look out time?
Second, do you have a runway blocked strip? The action of putting it there reinforces the mental picture. How will you reinforce runway activity in the electronic world?
Third, with the manual strip, the noise of the assistant putting a strip on the board alerts the controller. How will you replicate/highlight new information electronically so that there is no need to constantly monitor the screen?
Fourth, Has the wide variation in light in the tower been satisfactorily addressed?
For Approach and enroute the controller's main work area is the radar/FDP display in a light controlled environment, for the tower it ain't, so the problem of increasing efficiency is different and perhaps much more complex. Personally, I would like a head up display so that the information is overlaid on my main work area - outside.