It's the weapon skills that might get me to experiment a bit. I said it before, but I've been a career spellcaster through all the Soulsborne games, even going for an Arcane build in Bloodborne.
All these new weaponskills look pretty cool though, and might give me a reason to take up more melee builds. Glintsword Arch seems like a budget version of Homing Soulmass/Homing Crystal Soulmass for melee builds.
And skills like Holy Ground might help priest or paladin builds a lot. I ran a full support build as one of my co-op characters in DS3 (Filianore's Chime, Lothric War Banner, Soothing Sunlight, Sacred Oath, Projected Heal, Handmaid's Dagger/Simple Infused Caestus for extra FP regen, etc).
It works for co-op once people realize you're buffing/healing them, but sometimes newer players will panic chug their Estus and don't see that you already healed their health bar. This new Holy Ground weapon skill takes the guesswork out, since it is more easily identified. You can just drop a regen zone rather than having to aim Projected Heal or blow tons of FP on Soothing Sunlight (That spell is expensive, even for dedicated miracle caster builds using Dusk Crown Ring.)
Of course, the PvPer's will probably abuse this then complain until it gets nerfed. Same way they complained about Projected Heal until FROM changed it.