KPerry
I've never been able to get that drawing tool to work and actually generate a smooth curve, so I draw by hand. And it would be *much* quicker to be able to drop in a plug-in, or similar, select a waveform and period and fire away. Not to mention if I decide I want to change things (waveform shape, period, amplitude) rather than having to re-draw (and you'd have more accuracy too).
I get what you're saying, but the OP said "I know I can do it with plugins, but with track automation, an LFO to drive the automated parameter seems like it would get used occasionally." So I came up with a way to do LFO waveforms using track automation.
In practical applications, most synths have automatable panning so nothing is needed within SONAR for that. That leaves controlling parameters like pan as part of SONAR's mixing, like the OP referenced. There are advantages to using plug-ins but there are advantages to using the Draw tool.
I don't understand why you don't obtain the kind of even waveforms shown in my screen shot, but that's probably a separate issue. The OP now has an option that is not dependent on the Bakers adding a built-in LFO that I venture to say not that many people would use, so it would be prioritized fairly low on the to-do list - especially because soft synths have panners, there are plug-ins, and SONAR has sophisticated ways to generate, control, and vary the depth of periodic LFO waveforms.
I'm an "and" kind of guy, I like to know all the possibilities and choose the one that works best in a given context. Hopefully among all the options that have been mentioned, the OP can obtain the desired musical results.