Imo a higher rate wouldn't be bad, because the current price of Bitcoin is really low. Also, it's the aniversary of 1 year of this campaing, so we could do with a higher rate for celebration

-snip-
+1.
Yesterday (after the bitcointalk crash) I've made a comment with my opinion. Personally that's one of the best campaigns because of the automated system, but it's obvious that to celebrate the 1st anniversary and to make an improvement for their members, BITMIXER.IO team can consider a reward increase.

Actually, Bitmixer moves 25000
BTC/month in their mixing service.
There's a
0.5% fee, so that's approximately
~125BTC/month (profit). Remember that you can add an extra of
0.0005BTC for every forward address added on the mixing process.

Assuming that stats + the current stats from the BITMIXER campaign:
- Number of registered users: 365
- Last 7 days total payouts: 2.47512917 BTC
From the ~125
BTC/month earned with fees, they're ~2-3 reserved for this campaign so IMAO payments can increase a little bit without any problem. We have to think in facts like the bitcoin price and many many more...
NOTE: Remember that this is just an opinion, I like the campaign and features like the automated system, this is just a suggestion comment!
Stats sources:
- Bitmixer interview // coinprices.io interview: https://www.coinprices.io/articles/the-essential-role-of-mixing-services-bitmixer-processes-25k-btc-per-month
- Bitmixer fee: https://bitmixer.io/fees.html