Coin will slowly slide as people start to give into the idea it's a scam. Lots of dumps, others accumulate. Dev will show up with some promises, explain how he's run into more obstacles than expected. slight recovery, then slide again during the long break to the next update.

The guessing game then is does he show up with a working product in a few days (and thus a much recovered price for the accumulators) or does he just vanish.

Not like we haven't seen it all before.