Killstreaks.
Not too rewarding, and you'll lose it faster than you'll lose your girlfriend.
>Make it possible so that players who have crashed save their Killstreak. Really fucking annoying especially when your ping's a dickhead that only decides to fuck you over when you have a high killstreak.
>Increase XP rewards
>"Milestones"
5 Kills - 40 XP
10 Kills - 80 XP
15 Kills - 120 XP
20 Kills - Rampage! 200 XP
25 Kills - 250 XP
30 Kills - 300 XP
35 Kills - 350 XP
40 Kills - Dominating! 450 XP
45 Kills - 500 XP
50 Kills - 550 XP
55 Kills - 600 XP
60 Kills - Unstoppable! 800 XP
65 Kills - 850 XP
70 Kills - 900 XP
75 Kills - 950 XP
80 Kills - Godlike! 1100 XP
85 Kills - 1200 XP
90 Kills - 1300 XP
95 Kills - 1400
100 Kills - Wicked Sick! 1800 XP
110 Kills - 2000 XP
120 kills - 3000 XP
130 Kills - 4000 XP
140 Kills - 5000 XP
150 Kills - Legendary! 7500 XP.
That's it. It's lower than the first version of killstreaks (where 120 was 7500 XP). But still not too bad either.