Tempo synced envelopes

This would be even more useful with the extra envelopes in OS5. I find myself spending a lot of time trying to "tune" the envelope stages especially when I am using an envelope to modulate LFO rates and gain (slot X amount Y). This is especially painful for longer sounds so it would be useful if you could have at least 1-2 bar settings for A,D & R. Also some more stages to the envelopes would be nice like maybe a hold for HADSR.

Also it would be nice if you could change the curve of envelope stages. You can do this now by modulating each stage with itself but it can take up to 4 modulation slots (ADR + sustain slope) per envelope (this owuldn't work with synced envelopes).