I know you dont want to group the sats together at the moment but have you considered a special mtt ticket that can only used for sats?
Have a criteria to use this feature like 2-3k in tickets, play through of 1k a month in sats.
If you match the criteria you can change SN/MW/UK/UO etc to this special sat ticket in its various denominations. You shouldnt be able to use these tickets to buy into MTTs that pay out cash prizes/packages only MTTs awarding sat tickets. (example: 50Special sat ticket can be used to play for a UO250 but cant be used to buy into the milky way)
I think this would make life easier for players and unibet staff when dealing with masses of tickets and encourage the regs to join the other sats they dont have tickets for. I would definetly play a lot more games if I had a joint ticket roll.