1: i dont think anything would change if its PvE only, since thats pretty much the purpose of the build. It has everything optimised for mobbing/boss damage. Its still good for PvP since it has plague doctor’s utility and other goodies (silence from world tree for exemple), but nothing that i see should change for PvE.
2: Early on, sp regen is a bi***, therofore, its tempting to invest in it, but from all i could gather, the AoE is kinda low, if you move too far from it, you just lost the effect since the cooldown is big, and the points there could be replaced by money in the form of potions, which makes it an unnoptimal choice.
If you got trouble with sp, try sitting once each 10 sec, to double your natural SP recovery (natural recovery each 20 sec if standing, or each 10 sec if sitting, so abuse the sitting part by using sit once each 10 sec, it helps a LOT), or putting down campfire often, which are dirt cheap.
Later on, clerics dont spam enough spells to have that much of an issue with sp recovery, so those points spent would be kinda wasted for you.
Now, looking at other classes, everyone should have their own methods of dealing with SP recovery. Utility wizards dont spam, ele wizards put their whole combo and then wait until its up again, they got time to sit down and regen from campfire, psychokino and summoners lose % of max sp from casting certain spells, and it can’t be cut with this, and archers auto attack a lot and should be fine, unless they go fletcher, where their arrows cost SP each auto attack. small amount of it each time, they are the only one benefiting form it in the long run. Anything else either dont spam or has such high cost that its gonna be insignificant anyway unless maxed, and you really don’t wanna max that just so it cost a bit less in potions.
Since its situational, if you REALLY wanna invest in it, put 1 point in Carve Zemyna by taking a point of carve or world tree, and if anything, just use divine might before it and it should be sufficient. Dont put any more points into it, cause you’ll have to sacrifice something else which is usually better and/or scales better. Before any sort of big dungeon, you’ll be moving too much to make even using it once worth it.
I’m going to assume you speak of red gem in subweapon, aka dagger.
Its not that big a difference tbh, its not something i would try to put a lot of talt/other gems to lvl a powerfull red gem for only physical damage for carve and auto attack. it helps, but its only 1 skill. Keep that in mind for when theres nothing left to do to improve your damage, its kind of a low priority.
If you were actually speaking of blue gem on main weapon:
its not that it makes THAT big a difference, its mostly that it provides magic attack, which works on ALL skills. It shouldnt matter much until you hit max lvl, which wont be there for a while yet. LvL 10 blue gem is 59 magic attack. its a really nice bonus, but dont start gemming low lvl gear for that, since unsocketing reduce the gem lvl by 1, huge downgrade. Dont unsocket for it unless its already a end-game weapon with nopossible upgrade.
