there isn't room in the interface for a shape metaparam per-track, but there could be global param for selecting shape across all lfos (same as the cycles app). this feels reasonable as a configuration control rather than a performance control.
could even consider continuous "ramp" and "curve" params, like jf
4 sine wave LFOs
E: amt, rate, dest K: x rate, x dest arc: rate 1-4 (selected track lit)
alt + dest selects the track destination of lfo
destinations