I can’t say that doing a certain drill is right or wrong (every exercise should in the end lead to an improvement and a more complete skill set anyhow). On the other hand, it is easier to state the different properties of a certain move: Turning the kite at the end of the wind window with the LE downwards (a 180 deg team turn) is initially trickier than turning with the LE upwards (well it was at least for me anyhow…), but it is more versatile because it can be performed closer to the end of the wind window. The reason (as I see it) is because the part of it resembling an inverted hover demands “less wind” than a “normal” (LE) upwards hover. By exaggerating the inverted hover part of the 180 deg team turn you can also actually lift the kite making the exit higher up than the entry of the turn.
The team turn can also be performed with a nice flowlike continous “2-stoke” feeling: The first stroke is starting the rotation and lifting the kite with the inverted hover and the second is ending the rotation by speeding it up in the opposite direction (than the kite initially entered the turn from) by pulling on all four lines.
For the tip pivot ladder the recommendations I could possibly contribute with (“possibly” since you already started) is to look at the point of rotation (the inner wing tip i.e.) during the rotation, but at the LE close to the other wing tip just before the stop of the rotation. Then look at the LE during the pause and then repeat the rotation with the other wing tip (and obviously looking at that one instead)…
Before starting a 180 deg rotation step during the end of the (vertical) pause, add pressure to the sail while it is standing still by adding some line tension on all four lines. An alternative, as taught by John Barresi during the Danish quad clinic 2018 and suggested in member posts on Kite Life is to fly forward a tiny bit and then do the 180 tip pivot. You then gradually let the forward flight be so small that it disappears or can’t be seen. As always, chose what works for you. My forward tip pivots when going downwards tend to be a little lose with not so well defined start and stops of the tip pivots. I’ll see if I can address that by increasing line tension on all four lines (or some other method?).
To repeat the exercise many times (when learning the forward up/down wing tip e.g.) directly after each other is good for learning. However, at a quite early stage sometimes include *backward* (up/down) tip pivots (attempts), which can be done with little extra cost of session time. Kind of, when you really to start to focus on the backwards tip pivots to learn them properly, you have already started.
B.t.w. (completely non-kite related) I like the mood of the weather in summer time *just before the rain* in “no-wind” conditions when one can’t feel the difference between outdoors and indoors.