Well, just a few things..
Condensing a lot of modVariable lines from VCE into a single line (with Expressions).
More advanced math, such as calculating the players forward vector (for things such as making you run faster in any minigame)
String manipulation, you could make a chat bot, where you just say things and it filters your message, and replies suitably. Also encrypted chat, emails/pm..
Vector manipulation, lots of uses with my hologram events which should be released eventually.
Some things i have made;
Tracking all players on the server, using their position, yours, and your rotation to give you aim assistance, basically an ingame aimbot if you wanted.
Using your position, and rotation to make an 'iron man suit'. Basically uber jets on any server, any minigame, probably with missile launchers in your face too.
With my holograms, i've made a blue blob which chases a target. Kinda funny when duplicated.
Generally though, if you don't understand VCE, 90% of this pack will be hard if not impossible to use.
Oh, and might as well just say this now that its been bumped. The hologram system is going to be in this pack. It basically allows you to make static shapes through events, control their position, color, rotation, scale, etc. Probably will release it shortly after the pack goes to RTB, which it is still awaiting approval. Its been a month already :/