mmh, I re-posted some cards from another stream here and then deleted that stream. That deleted all the re-posted cards. :/
In the previous stream, which I deleted by mistake ( T_T ) I proposed having a way to create branches from thoughts without creating a brand new stream. The idea is to keep everything under the same context - the parent stream - and at the same time being able to elaborate a thought a bit more without extending it much. The branch could be merged into the original stream at some point.
Graphically, it'd look like git branch graphs :)
Another idea I posted in the old stream is that it'd be nice to have a way to reference cards from other cards. This would kinda add a way to extend people thoughts and share opinions without 'replying' to the card.
I don't think there should be a 'reply' feature in thoughtstreams since every card is not supposed to start a conversation but share a thought.
Another cool thing would be to have a 'preview' button. :)