The Raid Suit gives top notch mobility and more speed with its unmatched flying potential by its speed boosters and floating devices, more durability (apart from the Exoskeleton), the cape works as a shield, and it most likely boosts those powers that the Exoskeleton naturally gives (like Electricity, Light and stuff)
Thats all. Although Sanji is a skilled martial artis, called Black Leg for a reason, who can use his emotions as an offensive power up, which is Devil Leg, and now who got the Exoskeleton boost and also apparently his birthright power up, which is the invisibility.
Although how the invisibility could be boosted by the Raid Suit stills unknown. Maybe the invisibility doesn't get a boost like the other powers from Sanji's siblings.
From what i managed to guess until now is that Sanji in the Raid Suit can get permanently invisible, like the Devil Fruit. Sanji hit Page One while invisible, exactly to how Shyriu hit Moria.
Against Queen, Sanji most likely turned invisible, but when speaking or attacking the invisibility turned off. This could mean two things:
1 - Sanji yet didn't realized he can turn invisible without the suit, and consequently cannot afford to control it properly (very likely in my opinion)
2 - As i said initially, the invisibility works differently without the suit, so Sanji turns invisible while trying to speed blitz someone, or when moving around, like dodging and escaping. Basicly he would get more tricky, but he wouldn't be invisible the whole time cuz he would need to make an actual effort to "turn on" the invisibility, while the suit could do it permanently on its own.
That 2nd possibility would basicly confirm the idea that the Raid Suit boost their powers.
But this one is more complex, so im not sure
