If the idea of Trinkets are supposed to be to customize your character and playstyle, why are they all boring, flat buffs to a specific stat? Let's get some variety in there, and some unique effects. Here are just a few I came up with:
Heart-Ray Specs
▲ View Enemy HP
▼ Enemies View Your HP
Many different RPGs have some sort of mechanism, usually equipment, that lets you see enemy health. Trading one of your Trinket slots for this could allow more savvy players to pick off weaker enemies and players. The downside is that it works both ways, so not as to become overpowered in Lockdown. One allows viewing of HP of monsters and players; two would allow viewing of Boss HP (entire party informed of Boss HP optional.)
Emergency Tank
▲ Energy Revival Cost Halved
▼ Fair chance of causing moderate Curse/Revive with 1/2 HP/You can only revive three times
Any one of the downsides is enough to counterbalance the upside in my opinion, which is geared towards players that use energy revives a lot.
Silk Wing
▲ Sword Attacks restore health
▼ Sword damage penalty: Medium
Half a pip a hit for one, a pip for two equipped, subject to tier based restrictions.
Music Note Boombox
▲ All Attack Sounds Become Musical Instrument Sounds
It's silly c:
#1: Kinda useless and a bit of a waste of a slot
#2: Using revives a lot isn't a playstyle and certainly nothing to be encouraged. Also that trinket doesn't make sense because you make revives cheaper, but then limit and punish reviving.
#3: Bwahahaha, no. No healing. Ever.
#4: A waste of a trinket slot. Also this game is neither Minecraft nor Paper Mario.