The ability to Buy Rep Only for Use as a Bounty
4514
Pay to create a bounty regardless of reputation
95144
separate reputation for questions and answers
140925
(How) Can SE sites change their reputation payout?
30976
Option to hide rep/badges on the avatar block displayed of you
5135
Bounty by user with not enough reputation
51748
Can I award user with special bounty after accepting his anwer?
10343
Make voting activity on your posts available on site metas (what you would get from rep if metas had rep)
41186
Allow inviting people with rep < 20 to private chat?
4044
Explicit "do not award bounty" button
37008
Show "this question has an active bounty and cannot be closed" earlier, when it applies
21999
Option to increase bounty?
1165
How does the bounty system work?
119412
Can the limit on simultaneous bounties be relaxed?
134047
Please give us the ability to sort "featured" tab by bounty amount
27505
Increase upper limit of bounty
131817
How can I flag illegal reputation farming?
62952
Prevent questions on Hot List from being upvoted by casual visitors (only rep is from association bonus)