As year long member of the guild, member of the Old Rock and Champion of Niobia, I am here to give you my opinion on this very important topic.
It is clear that there is no possibility of staying neutral in this conflict. As we have seen, both Bretonia aswell as the Hessians have asked us for support. By both accepting or denying this, we already pick a side. So the best choice of all is to pick the side that is the most beneficial to the Guild. Also, think of the Zoners at FP1, I don't want a similar fate for IMG bases in the Omegas.
Let's see all choices....
Red Hessians: Honestly, I don't see how this would benefit us in any way. Firstly, they do not have enough resources to help the Guild economically. Secondly, they have no real military power against a house, especially not Rheinland. Siding with them would make us enemies of Rheinland and lead to a great loss for us.
Bretonia: They have already asked us for help, and this should be enough proof not to side with them under any circumstances. Let's face it: That house is seriously weakened because of the war with Kusari, and much more weakened than Rheinland because of Liberty. There is no way that Bretonia could win one war, let alone two wars, even with many allies such as Hessians or parts of Liberty fleets or us, or even if we sided with them. Siding with them would be as fatal as siding with the Hessians, therefore the Guild should deny any help to Bretonia. Think about it: What do we have to lose if we deny them? Nothing. The Guild has left Dublin long ago already, as it is too inefficient and dangerous to mine there. The only thing we could lose is the Hood, but I doubt that they would bring up enough forces to take it if they already fight 2 wars.
Rheinland: Without a doubt, allying with Rheinland, would be the best choice here. Why? Because, as it is already impossible to stay neutral, we are forced to pick the most powerful side, which is, undoubtedly, Rheinland. In all encounters between the two houses so far, Rheinland has been victorious. Furthermore, it can bring up more troops than Bretonia, as it is not as weakened from it's own war as Bretonia. We also need to take in account that we have very profitable mining fields in the Omegas, and it would be fatal to lose them. However, siding with this house could lead to a problem with Liberty, therefore we must use special tactics such as using ships with hidden transponders, so that there is no proof that IMG openly supports someone, atleast enough to let us operate freely in Liberty.
To sum it up....
Military support for: Rheinland, using hidden methods
Political support for the Red Hessian cause: No
Attempt at brokering a ceasefire and diplomatic resolve of the conflict: No