Skin Bundles always seemed like a logical way to go. As for boosters, it seems they stealthily increased the quantity you get when buying the 1.5x boosters from 3 to 4. A bundle including boosters (because people want to level fast) seems like it would be one way they would go but I feel that might be a tad lazy and not very creative. Rather, I wish they'd invest in a more fleshed out experience that 'does' sidetrack us but keeps us in the Universe. For instance, one idea I keep playing around with is a Demake (retro version of a modern game) of Raiders of the Broken Planet and if this became a real thing it could end up in a bundle and maybe playing 'that' game might funnel experience or other rewards into Raiders of the Broken Planet much like a mini-game would.