This is really an interesting discussion, i remember the late 90’s/early 00’s, when Samplitude and PT were getting their first MIDI editing features, prior to that they were mere audio editors. I hope i recall correctly but the per clip effect has been the last evolution of a concept wich at first started by “per clip automation”. I think it’s a natural pathway. I don’t know precisely because i haven’t yet used this, but i guess that with Ardour you can move portion of the automation points of your plugins but it’s not synced with the clips because the automation is thought to be a track feature and is independant of clips.
If this is correct, i think too, probably like Babag and rpatros and M.F from the other thread, that in some specific usages you want the possibility to have per clip automation like the gain enveloppe. For instance I have always wondered why it’s was not possible to have pan enveloppe in the clip like the gain enveloppe. It has been a long time since i made the switch to Linux and i am not sure of that but i think it was something quite standard in many multitrack audio editors (like Wavelab). This feature alone would be very handy but i recognize that it’s probably challenging to make it fit in a world where a track can have X channels. How could this be handled when there are more than 2 poles ? Nonetheless, since stereo is still widely used it would be handy to have it. Or may be this could fit if we consider that the next sophistication is a general model where we can combinate per track and per clip automation. So its up to the user to add a spacialisation plugin and edit curve points of a given number of enveloppes belonging to a clip and be able to affect them to destinations (the tracks effects automatable parameters).
Before jumping directly to per clip plugins wich is probably great may be it would nice already to have per clip automation of plugins wich simply belong to a track.
I hope i am not saying false things since its a long time i havn’t used the big audio suites like Logic Audio (wich i think should have per clip plugins too like Samplitude) and, btw, would be interested to know if PT has, at least, “per clip automation” (so called by me) or similar feature.