I make speed as a benefit for my gamepasses a lot, if it isn’t too powerful I would suggest that. Maybe extra coins and/or xp if your game uses that.
For cosmetic bonuses maybe give VIP trails or particle-like effects. I don’t know much about your game’s items, so it would be best if you can give more info on what your game is so we can help you better.
I actually thought of a speed boost, but I figured it would be pay to win, so I decided to make it so flag carriers would get a speed boost until they capture the flag or die.
Not entirely sure what it should be, it just feels like you should be getting one more benefit.
If your game mainly uses ranged weapons, speed is perfectly fine as a benefit.
A special gun and/or accessory item are usually what are used in games like that. I would be careful not to make any vip items overpowered against normal users though.
Dont make anything too over powered. Stick to cosmetics and maybe an item or two. If you have any other game passes, you could also include those like a vip bundle.