The end "hoop"of the current interval is placed at a distance that appears to be calculated from previous “power”, but usually one is going from 60% to 100% or more. The position is recalculated real time and the end marker recedes up the road because power has increased. Wouldn’t it be more sensible to set the initial position for the hard interval end marker based on the anticipated power for the interval and not the power of the previous interval?
This only really comes into play for short hard effort intervals. The marker for longer / recovery intervals is usually way out of sight because of the duration.
Just a thought - H.W.C.C Rob FloatAero