Like John said, the L Tuned was like the F sport in the early 2000's and only for the GS/IS lines. It would be nice if we got the GS430 (this gen) with the awesome V8, or the IS300 sportcross, both which I wouldn't mind having.
Here's hoping Lexus will continue to produce more 'F' models, like RXF, LSF, NXF, ESF, CTF etc to complete the lineup and compete with AMGs and Ms.