When stepping in at a range that allows for kicks to land I would use biu ma stepping, not classroom perfect but the knees cover the centre without having to hop along on one leg. We step the same way regardless of whether we are facing a kicker or a puncher as in reality unless the guy is nice enough to tell you in advance you won't have a clue what is about to be thrown. Do you always step in with your knee raised? As you also quite rightly state you won't know if the kick is high or low, or if the opponent is actually going to shoot rather than kick only now you've just balanced on one leg meaning the liklihood of ending up on your backside has multiplied exponentially.
As for feints not being in Wing Chun that's your opinion only and I would contest that it is a flawed view. A feint is any action thrown without commitment designed to draw a response from an opponent that can be exploited. Almost every technique in Wing Chun could fall into that category but Mun Sao or asking hand is designed for exactly that purpose, I presume that you don't have Mun Sao in your lineage?
I agree that Wing Chun is an agressive attacking system but it is not IMO a suicidal headlong charge and damn the consequences. Keeping both feet down allows you to change direction quickly if the opponent angles off from your attempt to close the distance.
If we are just out of kicking range we will bridge the gap with our leg raised , the leg is only raised for a fraction of a second and then it is grounded , we are talking a distance of about a metre and a half here , we are not coming in from half way up the street.
It is only up long enough to get you into punching range , if they did look like they were going to shoot then the leg would be going down to the floor anyway with all the bodyweight on it .
As to changing direction if they angle off , you just put your foot down and pivot , it's no quicker or slower than if you stepped in and had to pivot , it's not some big committed movement.
On ranges.
If the person is within kicking range then we will bridge the gap with our own kick , if they are within stepping range then we will step in and punch.
Regarding feints , it is not only my opinion , but the whole of our lineages opinion , I don't recall ever learning any feints in our classes .
The consensus seemed to be that they belonged to JKD , in our lineage we consider feints to be a wasted movement and we believe that Wing Chun does not contain any wasted movements.
If I'm going to use a Mun Sao it's going to be to deflect a punch , I'm not going to be using it to try and draw a reaction from them , why bother just move in and hit them.
Every deflection we learn is designed to be used while we are moving in to hit our opponent , our main objective is to hit , the deflections are just there in case they decide to initiate an attack before we get there.
