You will be able to create separate alerts for every level or create one for price crossing any level.
Because of some TradingView limitations, alerts won't be fired for the first bar of the session. Will try to solve that in the new versions.
In the script used new v4 plotting features, so will be able to plot levels and labels nicely. Unfortunately, there is a limit on the number of consecutive lines you can plot on the plot (around 50), so lines in the past will disappear.
You can enable/disable in params displaying level itself on the chart.
Past performance does not guarantee future results.
Previously, I've been using SierraChart trading terminal in my technical analysis. And their implementation of Pivot Points indicator has on option to forward-project PP - they are taking values of current daily candle even thou it is still forming, and based on current day OHLC values you can see forward-projected PP (they automatically adjust based on current price and they strand drawing from 00:00UTC of next day).
Is it possible to implement forward-projection with PineScript?