Majima just set my luck stat to 0 dude. It's insanely unfair.
I always wondered if there actually is a hidden luck stat that gets turned up and down on certain players based on behavior, if they're a known streamer or influential player, etc. but we can save that for a different conversation 
Anyway I agree a bit with the OP. We either need crafting mats to drop, or something needs to be adjusted with the entry limit.
Personally I think it would be a bad idea to be unlimited, but either of these would be quite fair:
-5 tickets can be purchased per day per character instead of per account.
-10 or 15 tickets can be purchased per day per account but keep 5 entries per character. This would allow us to run on an alt or 2 but still maintain an account limit.
Either way 5 per day per account is kinda unfair with how bad drop rates are. I know plenty of people who did their 5 runs today and got nothing. At the very least a small increase in how many daily tickets we could purchase would be much appreciated.