> One more idea would involve the "direction inputs" on the a1434 VCLFO
>
> Would it be possible to make it so that when the VCLFO is on 0v
> he resets and changes direction automatically and always stays above 0v

This would require four external comparators (e.g. A-167) and is more effort
than the usage of the offset generators A-183-2.

Best wishes
Dieter Doepfer