Microgaming - Many casinos are bending the rules over EZBonus (original design had a loophole, now widely exploited by advantage players), but problems are caused by the software being unable to implement the changes, AND by the standard banking screen being unalterable by operators (so they claim - Prime casino), which can lead to a conflict of terms between the banking page (always seen on withdrawal), and the website, where changes may be missed.
Good point, but overall I would say software support for bonuses are a problem for many platforms and not just MG. Especially Playtech and RTG. And bonuses is the biggest source of player disputes.
Intercasino has a perfect solution. When you claim the coupon (and with success) you can see what games are allowed and you can see how much of the wagering you have fullfilled.
Both RTG and Playtech have often bonus where some games are not allowed at all (compared to where some does not count for wagering). Why not have the casino software preventing players to play those games while they still have wagering requirements.
Why does some RTG casino (rogue groups) not show the remaining wagering requirements when the software supports this. This should be manditory for RTG casinos. RTG has a similar coupon system as Intercasino but the casinos abuse it. When and if a coupon is accepted they should are bound to the rules for that coupon and can not change TV on the webpage later.
This is a simple overall solution for bonuses/coupons:
1)When claiming a bonus or coupon the information (T&C) should be stored together with the wagering requirements. This can not later be changed. If a casino want to change the T&C they simply set the current coupon to expired so players can not claim it, and they they create a new coupon.The information needed is:
a)wagering requirement remaining
b) list of games that count for wager
c) List of disallowed games and the software should prevent players from playing these games
d) max cashout or other similar extra requirements.
The MG EZbonus was a good simple solution also, but some casinos are bending the rules as vinylweatherman writes.
Btw. both Wagerworks and Rival (and Intercasino) has a good bonus system that is supported by the software. It is possible!
Zoozie