Thanks, I figured that going for invasion-nobunaga might lock you out of yasuke and ranmaru because of azuchi castle no longer appearing and it seems I was right.
The main thing I'm trying to figure out is which is the best path for a meat-harvesting run, in such case you want as many targets that drop saint level meat (+15 to all stats except troops), and it seems that going for map-nobunaga is the best since yasuke and ranmaru are both saint level meat.
I find invasion-nobunaga has better genetic stats and skills than map-nobunaga, but I'm not sure if its super useful yet.
I've literally given up on combination skills until I reach the final stat target I want for my gobs. Musashi's true sword dance is the best honestly.
The Saint's meat, eh? What could be your purpose for gathering them? To corrupt heroines? Or to strengthen your goblins? Personally, I only see it as something to easily corrupt the heroines, or a way to strengthen your alpha unit. Other than that, it's barely useful.
If you're in need of Saint's meat, then doing the adventurer's tower then losing the defense battle (just empty your defense team) so you can start a new game+ is the fastest way to obtain them. (you get +1 Noble, Virgin, Saint meat every time you conquer the tower for the first time) With the correct setup, you can finish adventurer's tower in less than 3 minutes. (this is with macro/auto-clicker, so you are totally not gonna be bored with it)
However, if you want to obtain them solely from killing off heroines, then Azuchi Castle's Nobunaga will give you the highest amount of Saint's meat. All evolved heroines, heroines of faith (Garasha) will give Saint's meat as well. Virgin's meat is also valuable and easy to procure.
Combination skill, eh? So far, the only useful combined skill I can see is Monarch's Dignity. The MUSASHIS combined skill is too much of a hassle to make, and its damage multiplier is pretty low. It might work right now at low difficulty, but the moment an enemy with high def or high pack number comes out, that skill will probably only deal 1~3 damage per hit. (might be useful for applying status ailments) This was the biggest problem of Magic-based goblins back in I'll Borne, the all-target magic has too low of a damage multiplier causing only 1~3 damage to Florencia (a unit with ridiculously high amount of pack unit), which drove most players insane. Some even cheated and made their goblins OP, but still dealt 1~3 damage. (although if only they switched to single-target magic, they won't have any problem with Florencia)
IMO, The best skill in the game right now, is easily Mitsuhide's active skill. It's a skill that hits all enemies that are in range of your goblins, which means if the goblin in front has 2 range, then it's basically an all-target skill. Plus the damage multiplier is 0.8, pretty high for an all-target skill.
ALSO~! You might feel the developers are stupid for making heroines with PHYSICAL SKILLS (or Magic) have totally unrelated growth aptitudes, but it's actually intended. That is because the devs never want the game to be just a STAT-building game. The essence of this game is BEING a goblin. That means that you have to rely on your pack unit. The pack unit is there to provide brute force(stat) for your alpha unit. Your alpha unit is there to provide skills for the team. (both passive and active)
So you actually, don't really need too much stats for your alpha unit. As long as that alpha unit has the right passive and active skills, the pack unit will provide the missing stats for it. Also, I always see people using normal goblins as pack unit. And that shouldn't be the case. If you're using physical attack, then use goblin champions. (or if you're just starting then goblin riders has a default +50 ATK) If you're using magic, then shamans are the best. (or hobgoblins with meat shield, it has a default +50 Magic) Of course, you shouldn't let yourself be hit. If you got hit, always make sure you heal up your lost pack units and they will not be considered dead.
I once played Goblin Burrow I'll Borne at highest difficulty, and only used Generation 11 normal goblins as alpha unit. And I still beaten all boss except Nefarious. So yeah... although it is pretty obvious that you would want your alpha unit to have a high stat, but it's not really necessary. As long as your pack unit is strong.