Tier: 1-499: Title, pet, unique color crystal, unique emote.
Tier: 500-999: All previous rewards plus a different title, reuseable dye module, 2x valor boosts consumables, legacy title, warzone/ranked commendation bonus.
Tier:1000-1499: All previous rewards,different title, reuseable pvp stim and medpack, Credit bonus, 2x pvp rewards boost consumable.
Tier: 1500-2099: All previous rewards, Unique pvp armor set/ mainhand and offhand with effects on weapons( All pieces of gear have the highest level augment kit already built in) , unique pvp mount, Different title.
Tier: 2100+: All previous rewards, Unique title, Unique healing animation, Major Warzone and Rank commendation boosts, major credit boosts, Black color crystal(s), Unique PvP companion, Emote.
I think i can speak for most of the PvP community when i say that these would be some amazing rewards. Give the ability to legacy unlock all items once you hit a certain valor level, i recommend 70. Bring in a team deathmatch game type on a couple new maps. Bring in a 1v1 arena, 2v2 arena, and a 16v16 warzone. Bring back 8v8 ranked queue along with 4v4's. Make all rewards unique to pvp only, and dont do any re skin or re color. I hope that you see this post and strongly consider using some of the ideas. Keep everything original yet new.
-Happy Hunting