Conditionally format line chart

Line charts are lacking a lot of features which are even available in other chart types. One of them is allowing for conditionally formatting the line chart. Conditional formatting of line chart should be allowed in TWO ways: 1. By color (if the values is above/below a certain threshold), the color of the line should be different. Potentially also allowing for gradients. 2. By line type/shape (solid, dashed, dotted) ... it is helpful in allowing lines to be dashed/dotted if they are a certain value. Also, ideally we should be able to plot two measures (say Revenue & Profits %) ... and both be conditionally formatted based on thresholds. Such as to in certain months revenue might be low and profitability is high. The good/bad thresholds can be very different for measures for the different product categories (filtered by the end-user).