Game Mechanics I think that accessory slots should have different options at character creation

[ProfessionalAtFailing]

The Specialist: Additional slot for wings and allows you to put boots in your armour boot slots at the cost of, say... an 8% decrease in movement speed. Demon Heart removes debuff.
The Light Packer: One less accessory slot for an additional 12% increase in movement speed and a 15% increase in jump height and flight time. Demon Heart gives a wing slot.
The Adventurer: the regular 5 slots, no buffs, and can use the Demon Heart for an extra slot.

maybe i should make a mod or something...

 

[Dapling]

The Specialist is straight up overpowered. You basically get a free bonus accessory slot with basically no downside (8% decreased movement speed can just be straight up negated with lightning boots, which you gave an extra slot for.)