A couple Ideas:
- Have a weapon or vehicle of the day bounty - “20 kills with the needlier for 100 REQ points.” etc.
- Have an additional 3 bounty categories you can choose from each day: AI kills, Spartan kills, specific weapon/vehicle kills. Once you complete your selected catorgorie’s tier 1 bounty a tier 2 bounty becomes available (slightly hardier - slightly more REQ reward).
Example: Tier 1 - 3 AI kills = 100 REQ points
Tier 2 - 5 AI kills = 150 REQ points
Tier 3 - 10 AI kills - 400 REQ points