No one gets credits every few minutes, I just said that because I don't know the exact time sorry. When people do though, the thing that differs is the amount. Donors get 200% more. And I still don't see the point of a raffle. You might as well just suggest to up the number of credits you receive right now.
You do raffles when you want to giveaway some expensive shit, or something interesting or at least exciting. This is just giving random people a random amount of credits, not significant enough to make a difference but higher than the usual amount.
The titles and other stuff in the store are not supposed to be something you can just buy if you play a few hours. They're meant to be things that you can earn after spending days on the servers. Especially if we're talking about metal. If you put blw.tf in your name that's +25%, if you complete contracts you can already earn a lot of credits. That's my final opinion, it's unnecessary.
*later on the server*
*BING BONG* "There has been an instantaneous raffle that you didn't sign up for or knew was happening everyday in the exact same time and John has won 80 credits!! HURRAAAY! He can buy... oh wait, he cant buy anything with that... sorry..it's just random credits, hope we made you happy, I'm sure you'll come back tomorrow for this huge amount of 80 credits, and btw, raffles only start when the server is full or close to full otherwise it would be easy to cheat it so usually like 10 servers have a raffle out of the 170, hohohohohoh"
You know when we could do raffles like these every 30 or so minutes on servers? On special occasions or on "red-letter" days. So Christmas, New year, Easter, Blackwonder anniversary etc.
