Hi DarkAngel and Others that are looking for the close on click image functionality.
I have successfully modified slimbox.php to accept this parameter.
The issue now is, as suspected, the hover (Prev / Next) functionality is broken.
I have worked through this by carrying over mods from ZLB1.5 css file which removes the hover functionality all together and permanently adds the Next and Prev buttons to the upper corners (when needed for additional images).
As a personal preference I dont like the buttons to be on there all the time, but if thats the preference of the ZLB user community I can easily set it that way.

Thoughts / Opinions / Suggestions?