My suggestion is to add one more collector and to tweak the collectibles interface to use the barter system that we currently have for Cannith challenges and use that to select the rewards rather than getting something random.
In the levels and lives when characters are more likely to use this system (i.e. low and first) I think it would be a good way for new players to get a few of the essentials they might struggle with right off the bat. Have a Korthos Island Memorabilia Collector (or a real name, whatever). My TR's can slap down the currency for 50 starter cure light wounds pots and drink 4 of them through all of Korthos. But first time around I couldn't.
3x Sahuagin Scales - Choice of a cure minor wounds (d4+2) or warforged equivalent
2x Cultist Symbols - Potion of protection from evil or potion of bless
1x Jacoby Drexelhand Fanboi t-shirt - I've run out of ideas already
So, later on, our new players gather up their harbor collectibles and make their way to goldscuttle to ship off >9000 strings of prayer beads instead of receiving masterwork bolts (thanks guy) give them the option to either trade them for a small amount of platinum, five for arguments sake, or choose something vaguely related and potentially useful that might not be known to new players.
I'm not suggesting making the collectible rewards better, rather, eliminating the extra step for monetary gains on the reward items you don't want (masterwork armour) and making the things players do want less of a random chance.
It's really of no concern to anyone on second lives or past level 4, but I still think for new players it would be a good idea.