Now that I delved deeper into the lore, will you be adding in the bulwark III into the rebel fleet as I don't see it in the planned list, the Bulwark III seems to make a good combat focused battle cruiser, if the's free space with all of the MC80s
The Rebel Alliance has two capitalships that are not Mon Calamari Cruisers. As of now the Bulwark is not among them, mainly because it fits in a somewhat awkwardly in the unit scale. Sins units do not have any known dimensions, but the scale I've chosen for Star Wars units puts them mostly between 1-2km (most closer to 1km). The Bulwark is 2500 meters, nearly 1km bigger than an Imperial Star Destroyer, above which I'm reluctant to add without good reason. The only ship currently in the 2-5km scale range is the Allegiance Battlecruiser, which is only obtainable from Hero Units and cannot be built normally.
Basically, it is very hard to represent and balance a Star Wars unit at its canon strength as a capitalship when its larger than 2km.
Im also guessing that the Viscount will be a titan for the new republic?
Yup.
So what will be the titan for the rebels?
Home One. Like Darth Vader in the Executor is a titan for the Galactic Empire being commanded by a named character, the Rebels have Admiral Ackbar commanding Home One, just like at Endor. There is some debate as to just how big Home One is; I tend to side with the camp that says based on shots from Episode VI it is significantly larger than other MC80 cruisers and even Star Destroyers, likely around 3km. However the official canon stats always gave it roughly the same size as other MC80 cruisers, which I think is a result of the confusion of calling all these different ships "MC80s".
It does seem that the rebels require a lot more effort into them since the rebels and the new republic have different capitals ships and with it, different tactics.
Yeah, the Rebels and New Republic will be more different than the Galactic Empire and Imperial Warlords are. A few of the ships will be shared but many of them will be unique to one or the other. Also whole sub-tech trees will also need to be faction specific most likely.
On the other hand, since in the lore the Rebels and New Republic are on the same "side", they can share hero units more easily than the Empire and Warlords can.