I got from here https://www.behance.net/gallery/28773445/Crypti-UI-UX-Design
that you gonna make a Contacts dapp, but only with personal contacts. I think it will be a good idea to add a
"corporate accaunts" as well, so I can send encrypted message to "Crypti Foundation" (or to Kordec Dapp Studio) account and every member of it can read it.

It also must be possibale to create a supersecure altcoin exchange here (inside wallet), cause access to private keys of altcoin wallets (that will will be all stored on custom user's keys chain) may be only available via crypti SUPER private key (known and attached to particular user). That means that there will be no one central BTC key to exchange funds (remember bter hack?), but each user will have it's own BTC key on their custom chain containing keys. So it will be impossibale to steal ALL the money from exchange, only hack one particular user's account at a time. It's also mean that there will be no "cold storage" and all payouts will be processed faster.

It looks obvious to use blockchain technology on altcoin exchange. And, by the way, the fees from trading will create income for foundation and future crypti development.