something i'd love to see in zeus is different ways to highlight the current line. multiedit draws a dotted box around the line, which is subtle enough to tune out when reading code, but clear when you want to find the cursor. it has the benefit of not interfering with syntax highlighting.
another possibility is to draw the text normally and then draw a filled rectangle over it using alpha blending. this would let you tint the current line so that it stands out as much as you desire.
allowing both of these simultaneously - non-alpha dotted outline plus alpha interior would provide for excellent clarity without the intrusive nature of the current method.