I am glad that you like this VSP version of Bugsier2, because a big stern skeg instead of the stern thruster doesn't change much her handling versus that of the regular tractor configuration. It is then just easier due to the faster thrust orientation of the VSPs.
The RAVE arrangement is indeed what I meant, and configuring such dynamics is no different from others, "not a big deal" as soon as the underwater parts are well defined, even if the drawing or the design is flawed. The controls would be more difficult to tweak correctly. For instance, you use 4 keys for one VSP, a key to ahead, to astern, to port and to stbd. Double them for a second VSP control and try to explain it to players who jump from ship to ship. Moreover, it must be enough consistent with the bridge controls, and I am sure that the real ones are very different from the Maassluis ferry handles. Not that realistic controls are possible, but they should at least match the real ones good enough that an operator can instantly understand the layout, once he knows what is under water. Until now, I haven't seen a bridge equipment picture of such tugs.
The same goes for the towboat controls, of which the flanking rudder handles don't resemble the real rudder handles, due to the lack of a proper stick. It is also true that some explanations wouldn't have hurt too, but making oneself heard, or eventually understood, is a real pain when you don't really master the language.
Also, I was made aware that the à la Hamilton jets should be modified to better represent their manoeuvrability while stopped, but there was no demand for that, and although not very complicated, it wouldn't be very easy to keep track of the changes.It would mean adding a weak "virtual side thruster" synchronized with the wheel of the jet(s), and some other domestic dummies. It could remain WIP.
Regards,
Luc