Hiya!
As the title says. Various thigns that are mostly uselss in 5E IMHO.
1. Intelligence saves. There is a few spells (I can only think of feeblemind) and things like Mind FLayers and Intellect devourers. Unless you are a wizard intelligence seems to be the ultimate dump stat. No bonus skills or even languages mkaes it a really crappy stat for most classes.
2. Medium armor. Attacks are keyed off strength and dex so maxng one or the other is often a good idea. Medium armour is a bit better with 4d6 drop the lowest and a decent roll, along with spellcasters lacking proficiency in heavy armor. MAD s still a thing in 5E. Gets better if you can key your physical attacks off a spell casting stat (Nature clerics, Tomelocks, Dragonkin race).
I'm gonna hafta disagree with both those, IM5eE, both Int Saves and Medium Armor (well, not having Medium Armor as opposed to having Heavy) have proved FATAL more than once. The last time I remember characters up n' dieing was:
6th level Barbarian (with ridiculous HPs) v. Intellect Devourer. "Failed your save? Ok, you take... 7 points of INT damage. What's that? Your INT is now -2? Oh...uh...sorry...". He basically laughed in the face of death and boldly strode into battles that were (or should have been) waaaay over his head...but his min/maxed stats and capabilities finally caught up with him when his vulnerability was at play (INT).
Another time, a Paladin who had, up until this point, had Medium Armor. He dodged, swam, climbed, etc. with the best of them. Then he got some hobgoblin armor 'modified'...it was Heavy Armor. Not two sessions later, he was failing all that stuff...which got him smooshed when I allowed him a DEX save. Now, I know that my House Rule of applying the Heavy Armor "Disadvantage" (Stealth) thing isn't part of the rules...but they should be. "Standing Still and not moving" imposes disadvantage...but "Dodging, sprinting, and moving quickly" doesn't?
...makes
zero sense to me...
Of course, just RAW, Medium Armor is...odd to have purely on a mechanical basis. Then again, IMC, Heavy Armor is quite rare and pretty much reserved for nobility, very-rich-types. But again, that's a campaign thing...nor RAW I guess...sorta...even though the DM is supposed to take all that into account in creating a 'believable world'. *shrug*
Anyway...INT Saves tend to KILL as much as WIS ones. And Medium Armor...well, depends on how lavishly the DM holds to other rules that would benefit/hinder being in Medium Armor ("Disadvantage" rolls, encumberance weight limits, availability, social stigma/acceptance, etc).
^_^
Paul L. Ming