The seven day timer for credit items punishes you for taking a break from the game and adds to the already constant grind for credits. It also makes me much less likely to shell out money for gold items, some of which last for only 2 days. Outfitting a BB is partcularly interminable becasue it can take hours of addtional grinding just to replace expired armor. It is a pointless and annoying system that greatly detracts from enjoying the game. If you want to make items more expensive to compensate that's fine with me, just please make them permanent.