Below are the effects of the current infernal capes. In red will be my suggested changes.
Effect: Walking speed +10%, Reduce damage taken from demi-human monsters by 5%.
Professor, High Wizard
Matk +10%, SP +5%, Int +20
Mat+10%, SP/HP+5%, Int +20
Gypsy, Clown, Sniper
Hit +80, SP +5%, Dex +20
Atk+ 7%, HP/SP+ 5%, Dex+ 20
Lord Knight and Paladin
Attack +10%, HP +5%, Str/Vit +10
Attack+ 10%, 7% reflect, Str/Vit+10
Assassin Cross
Hit +80, HP +5%, Str/Vit +10
HP +5%, Attack+ 7%, Str/Vit +10
Taekwon, Soul Linker, Star Gladiator
Hit +80, HP/SP +5%, Int +20
Star Gladiator
Attack +8%, HP/SP+ 7%, Str/Agi +10
Taekwon
Attack +10%, HP/SP+ 5%, Str/Agi +10
Soul linker
Mattack +10%, HP/SP+ 7%, Int+ 20
Gunslinger
Long Range attack +10%, Hit +80, Dex +20
Long Range attack +7%, HP +10%, Dex +20
Ninja
Matk +10%, HP/SP +3%, Int/Str +10
Matk+ 7%, HP/SP +5%, Int/Str +10
Whitesmith
CT Damage +10%, HP/SP +3%, Str +20
No change. Good job.
High Priest
Matk +10%, Increase healing skills by 10%, Int +20
Cast Delay -10%, Increase healing by 10%, Vit/Int +10
Stalker
Attack +10%, SP +5%, Dex/Int +10
Attack+ 10%, HP/SP+ 3%, Dex/Int+ 10
Champ
Hit +80, SP +5%, Int +20
Hit+ 80, Throw Spirit Sphere Damage+ 10%, Str/Int+ 10
Creator
Hit +80, SP +5%, Int +20
MATK+ 10%, HP/SP+ 5%, Int+ 20
My last suggestion: Add 1-2 more colors. A nice dark red or a black would be really great. If not implemented now, maybe an NPC to switch them later?
**********Edit***************
Grouping suggestion removed after considering Shield's post.
Feel free to add comments or give me some troll feedback. ie: "DAT SHIT OP"