LFOs are easy to add. I can add 100 of them to the OB-6. All it takes is having the synth connected to something on a network, wifi or bluetooth, and an iPhone.
Even easier: CodeKnobs VST for the OB-6 on my PC and throw infinite LFOs on there, and they’ll use NRPN etc.
“1 LFO” is only a limitation if you let it be.