Why do adventures have to have 'ls adventures worth doing'? All that happens when we have bk/rb in the adventures is that the rich get richer as they sell the ls's at daft prices instead of working within the guild to mutually support one another.
If you want an adventure with a ls then why not do dark priests? We have been sending these to our lower leveled members who only have slow generals. They start the adventure, 30mins later get a kill and the person who sent them the adventure then sends mma/nus to kill it in no time at all. Win-win for both as the higher level player can still be doing traitors/ywc etc while the slower player travels...
Also as has been said before, why not so coops? If you get a lower leveled player to start a buccaneer and they get their troops on the way you can join 15 mins later. Once all have killed the first three camps the lower leveled player can head their troops off to a loot-spot on the next buccaneer while the higher leveled player kills the rest of the camps. Rinse and repeat..... Or 3 players of same level can wipe them out in next to no time if they have cannons, mmas, mg etc.
I won't say I love the choice of adventures, as said earlier on thread, but they are what they are so work with them.