I'm with Jaggedtoothgrin and Onyx here: 'Friendly' barging should *not*be allowed.
Essentially it is up to the player to move his units in such a way that he makes the best use of them. If they get stuck out of position (because they did not start in a good arrangemement, or because of superior manoeuvering by the enemy) then it is his bad luck.
One final point that has not been discussed here and which is extremely pertinent; although vehicles may move over infantry, infantry may not move over vehicles. So once the WE is moved into position, I would expect the infantry countercharges to
move around it (as the most 'direct' path open to them). The point here is that there is nothing in the rules that forces a player to move his units in a particular order - the only constraints being the implied lack of a counter-charge if a defender is already in BtB with an attacker - so move your units in the most appropriate order!
On Matt-Shadowlord's most helpfull images:-
Matt-Shadowlord wrote:

4) Counter charge that affects infantry

I would expect the Gorgon to skirt his own units (which are 4cm long), and be placed on one end of his own infantry (north or south in the picture).
Note, if he had 6 infantry laid out like this, the Gorgon would not have sufficient movement to countercharge into contact (as it would have to skirt around two sides of an infantry base or 5.5cm). This would be an example of 'poor' positioning by the Krieg player
Matt-Shadowlord wrote:
5) Controversial version of counter charge that barges enemy infantry

Number 5 above is very unpopular, as barging enemies and forcing them out of base contact with friends would be very powerful.
Not allowed at all (IMHO)
Matt-Shadowlord wrote:
6) Counter-charge against a fire fight

Here, all the player needs to do is move the Gorgon North (or south) around one end of the infantry. I see no reason to 'barge' here at all!
Matt-Shadowlord wrote:
Here the Gorgon can move over the infantry as it can move 5cm, and it is 3cm the infantry are 1.5 cm wide - a total of 4.5cm
(note, here I would also allow it to move over the older 2cm bases for the same reason)Finally E&C (and others) make an extremely valid point that the Krieg player does not need to disembark all his units; as there are 20 units, he could probably keep up to half of them in the Gorgons and still win most engagements as these units still coount in the resolutioin, so even if all the outside infantry are wiped out, he is still likely to double outnumber the opponents so starting at least +2 up.