I think that such lotteries are wrong, and the number of slots per participant should be limited.
The bonus should be received by those who use the project for exchange, and not by those who use the project for a guaranteed win.
There's nothing wrong in such type of raffles, the ones who take more slots will have higher chance of winning and if someone is capable to occupy more slots by trading at the exchange then what's wrong in such approach?
Most members who apply in the raffle already use the exchange and if they win something by doing high value trades then there's nothing wrong in that approach I guess and that's why there are no such rules to limit a member who participate in such raffle.
Exactly.
If you participate by taking one slot in the raffle, your chances remain the same, regardless of whether the remaining 29 slots were occupied by one person or 29 different ones.
If there was a limit of no more than 5 or 7 slots per person, then the participant would have a better chance.
Forum member knuckey took 48 slots, although he could have taken 50
https://bitcointalk.org/index.php?topic=5578967 Sr. Member knuckey took 48 slots, although he could have taken 50. Another participant still has a 4% chance of winning

ulFor this week it looks like I will win again, it would be a good idea if each participant is limited to at least a maximum of 10 slots for each participant, it will definitely be tense when the draw starts, I really agree if the slots that will be taken are limited to at least 10 slots