just some thought that came up to my head
New shields:
1) Damaging shields: a type of shield in which enemies take damage for hitting or when shield bumping or canceling (damage is greater when shield canceling). Enemies only take damage if they physically touch it. These shields are a type of plate shield and would have either less special defense or less health than plate shields. Branches of from the 3 star plate shield and like all plate shield retain the speed decrease
-Anti-angel (I'm not good with names): A shield that was made to for the fiends and undead to defend them selves from celestial beings.
Protects against piercing and elemental and deals shadow damage.
-Gates of hell: Defends against elemental and shadow damage and deals elemental
-abyss: protects against shadow and piercing and deals piercing.
2) status aura shields: These shield can cause a certain status ailment to occur in enemies while shielding (chances is highest when shield canceling). The shield branch off from the owlite shield. Each shield would protect against elemental and normal but will be weak to the status the deal.
-no ideas for specific names
3) spread shield: a shield that large semi circle barrier meant for defending fellow knights. Has max defense on normal, elemental and health, but only guards you from frontal attacks. Also has several small blackade barriers like the ones battlepods have. The shield has very long endurance but the fact that it so wide make and easy to hit makes it run down as fast as any other shield. This would be a two star token reward from the bark modules.
4)repelling shield: a shield that makes a smaller repel attack that battle pods make. Happens at the same moment when you shield and can not repel bullets. The shield only defends against normal.
Enemy buffs
1)Give vana a shield that has damaging spikes and a fire aura. The shield is always actively blocking attack on his left side and he can call it to the front when under gun fire. Touching the shield will inflict both fire an piercing damage
Trinkets:
Bigger bag: This trinket allows you to hold on more vial or capsule in a slot0 (so 4 in one slot). 2* would give you one more vial in slot one 3* will give you one more in slot one and two, 4 star will add one more in slots 1-3 and 5 star will allow one more vial in all slots.
Extra bag: the alternated 5 star upgrade of the bag add one more slot to you quick slot bar. his bag can allow you to carry a vial you al ready have (in the extra bag only by moving it to the extra bag). Also combining the 5 bigger bag and the extra bag means you can carry 4 vial in every bag including the extra bag.
Charge attack changes:
1)Valiance: should shoot a large laser similar to mecha turrets
2)Cutter: should have a quick spinning attack that can deal ten hits (launches you forward when used)
Accessories:
-Lightning aura
-ice aura
-belts
The shields you have outlined would be spammed. I am in large disagreement with the idea of a retaliating shield.
The idea of something like an unlockable pickup expansion trinket is interesting, but I personally don't use many vials at all except on JK and maybe Vana.