My ideas for RP per card are as follows.
-------------Weapons
Common: 50rp to 100rp
Uncommon: 75rp to 150rp
Rare: 100rp to 200rp
Ultra rare: 150rp to 350rp
Legendary: 200rp to 550rp
--------------------Vehicles
Common: 50rp to 75rp
Uncommon: 75rp to 150rp
Rare: 100rp to 300rp
Ultra rare: 150rp to 350rp
Legendary: 200rp to 600rp
The RP levels I have proposed are due to the available reqs in that rarity. Let me know if I went too high or low, and make your own suggestions.
I don’t think your proposed values would be a viable option. Sure it’s a way to encourage selling REQs we don’t use, but in terms of profit, each REQ card is worth way more than their face value. Proper use of vehicles and boosts in particular can rack up some mad rewards.
The RP will be irrelevant to 343, only the real money.
If they realise that they can charge $/€/£0.50 for single reqs and sell more than regular packs, they will.
> 2533274882108474;3:
> The RP will be irrelevant to 343, only the real money.
> If they realise that they can charge $/€/£0.50 for single reqs and sell more than regular packs, they will.
That was another point: sell individual reqs by themselves instead of getting the 1.943 percent chance of getting a phaeton in a gold pack grind.
First i sold everything, now i sell nothing.
I getting use for it sometime 
When I have over 100 of the same weapon or vehicle the I sell.
I think most REQ-values are fine, but I think selling Legendaries should give more around 300-400 personally.