Your marketing department should start looking at these things from a PLAYER's viewpoint. If they did, they would have forseen that this would ignite a debate about users of Neteller and Moneybookers feeling that Rushmore no longer valued them as much as ALL other players.
There is ABSOLUTELY NO MATHEMATICAL LOGIC in not letting ALL players take part in a WELL DESIGNED promotion. The odds of beating the casino are EXACTLY THE SAME, regardless of the initial deposit method. Players know this, and therefore consider that there must be some other reason, but the only kind of non-probability based reasons for barring these players from the bonuses are accusatory, insinuating that users of Neteller and Moneybookers are somehow "not playing in the spirit.......", whilst users of the other methods are.
Since this was a CHANGE from a far simpler system where ALL deposit methods had the same code, it has to have been a positive decision to target Neteller and Moneybookers users so that they could no longer use the weekend bonuses, because it involved quite a few changes & fixes having to be made to a system that to all intents "was not broken".