Here is my thinking on it ....If there would be only 1 market TF / dimention it would be borring and too simple. Combining TFs is the key (btw: i think guys work on video about it right now).
You are very disciplined and selective trader if you look for confirmation for 3 TFs. For me often 2 TFs confirmation is enough, but of course i do not want to see in the same time conflicting signals from higher TFs.
Regarding "It can be very annoying if the pattern redraws on a new low or high. ie, the wing will extend to a new point, knocking out my stop.". Harmonics have this special feature that they allow to enter with very small SL comparing to high TP. With my trades i often take 10 even 20 SLs in a row and 1 TP will earn the loses. In my case it's again related to multiple timeframes, as I look the pattern from higher TF (M5, M15+) and I enter always from M1.