Exclusive Yume twins appends?

So as of now, the Yume twins have had six Appends (the last four which need to be recorded); LUCID, WAKING, SHATTER, NIGHTMARE, LULLABY, MIRAI. As you know, their vocal libraries are available for free. Now, I am sure you also are aware how I plan to make physical, boxed versions of the twins which will contain the allowance of commercial usage. This will be a full package of all 6 of their Appends, plus the Lite English expansions which will be recorded for both WAKING and MIRAI. The package has been decided to be sold for $70 dollars when I am able to get a table at a convention, and perhaps someday on their website. However, I want to make the package more worth purchasing, since all this stuff will be available for free. So far, the only advantage of purchase is having a physical copy you can hold and feel, as well as being able to use them commercially (which is mostly worth it only for the serious UTAU user). So I thought, "what can I do to make the packaged version more worthy for buying?" And then I thought; exclusive Appends!

MIRAI was the last Append to be announced for the twins, which is their Adult-style vocals. For the packaged version, I've decided to give MIRAI its own sub-appends that is exclusively obtained by buying their box. These will be known as MIRAI Yasashii and MIRAI Kowase (lit. "Future Gentle" and "Future Break"). These serve as the Adult-style vocals of LULLABY and SHATTER. The only other way to possibly obtain these exclusive appends will most likely be as a prize in a contest. In fact, when their boxed versions are finished, I even plan to have their entire box be a grand prize in a contest that contain everything. Like all their other appends, these two will even have their own outfit designs. 

My goal for the twins is to provide an easy-to-use, high quality vocal library to the best of my abilities that is affordable. This is why I chose $70 dollars for the entire collection that will be 8 Appends+2 Lite English. Being a double voicebank, these appends have to be recorded twice, so you're literally getting 16 voicebanks and 4 expansions in total. Their commercial package will have brand new in-use icons and new "omake" art that will be allowed to use in covers and originals. Once I get better equipment (such as a mic stand and pop filter), that is when I'll begin creating their ACT 2 library series. ACT 2 will have all the same appends, with updates made to their original ACT 1 outfit designs. Even as new ACTS are produced, their original ACT 1 will ALWAYS be supported by me. Because as you know, no matter the fact having the same voice provider and recording nearly EXACT to the first, noteable differences tend to happen...a lot of times, an update has a gain and a loss. This way, if there was something about the old banks you liked, it will always be available to you. 

Anyway, so there is your Yami and Hikari updates! As you know, Yami's "WAKING" is still in the oto'ing process. Also, as usual, certain syllables from Hikari is giving me minor issues. And I will most likely need to re-record the rya's, this is a syllable I often struggle with and they ended up worse than LUCID's, so I'll probably re-record those for both appends (yes, the 1.1 update for LUCID is still on its way). 
Also, out of all the appends, I am having trouble with thinking of a design for "SHATTER"; how many of you guys would be interested in a design contest for this append? Let me know in the comments below!

If you happen to have stumbled upon this by accident and have no idea who the Yume twins are, I invite you to check out their voicebank here;