Sweet questions dude. Somewhere someone will have the same or similar so good to ask for posterity.
note: I'm not overly familiar with the individual DE units and can't be arsed to open the TP (and it doesn't really matter as the rules are the rules irrespective of the name, generally)
Deb wrote:
Question 1: If my leader who has a close combat MW weapon is added to a formation of vehicles that have CC and FF values, does he still get the +1 MW attack if I elect to use the Ravager in CC? I think the answer is yes as LV rules allow transported units to shoot from them, and in 40K they are open topped. However some may argue that it is a vehicle.
If you place a CH with a CC weapon into a vehicle of any type, the weapon still counts. The LV rules don't have any effect here. For instance, I can (an do) put Commissars into my SHTs. If someone CC's him, he gets that sweet MW attack still. Best to think of CH as functionally being waregear. You can use any applied amount of hand-wavium to justify why it works on your particular vehicle.
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Deb wrote:
Question 2: I have an all vehicle formation the Kalabite Flotilla made up of 4 or 6 Ravagers. I have to allocate the leaders to the vehicles. If I add a new unit to the Formation, say a Pain Engine which is a War Engine, can I allocate this as the Leader/commanders unit?
Question 3: Similar to question 2, however I can upgrade the transports for my Kalabite Syndicate or Kalabite Coterie to Barges of Pleasure - War Engines, and I can add a single Ravager to the Formation. Can I state that the Supreme Commander/Leader is in allocated to either the ravager, or one of the Barges of Pleasure? I am thinking of his survivability here.
Should be able to (see my SHT example above) unless there's a specific restriction on the unit entry/list design such as "SC MUST be put on / in XYZ" you should be good (check the list to confirm).
Deb wrote:
Question 4: If the Leader/Commander is in the War Engine unit, does he lose his invulnerable save? I know that they can not carry out any actions including shooting (3.1.3), Does this mean they can not use their abilities? remove a blast marker, order up to 3 formations of troops to follow then in to an assault/Fire fight, and to re-roll a failed initiative test?
No. The CH abilities and weapons are
added to the unit it is placed on (hence the wargear comment above). In the SHT example, the Commisar character grants the tank they're in
Fearless (and everything else as well).
edit: Be aware that the CH could be in a unit that is transported by another unit. The abilities do not magically transfer to the containing vehicle. So for instance say I have a Marine SC in a Predator (don't ask why) and that's in a Lander. The SC invulnerable save doesn't transfer to the marine lander. Capiche?
Deb wrote:
I could see a Space Marine player who upgraded a unit with Dreadnoughts adding his Librarian to the Dreadnought unit making it a Librarian Dreadnought.
Yup that's totally possible (though Dreds are in practice rare as hens teeth for most marine lists except for those with special themes that make them useful such as IW and IH). But you got it!