UVI Workstation for example offers some more different Random LFOS called Random S/H, Chaos Lorenz (I guess this is a Lorenz Equation?), Chaos Rossler and also a analog Square.
Would be cool if this could also be implemented in Radium
In the far future a MSEG Generator would of course be ace, but some more function based LFO Types are probably easier to implement in the short run
maybe you like the idea.