I have one launching within a few weeks for BTC, LTC, DGC, SRC, ARG. It is currently in the final development and testing stage and is a shared wallet architecture, with multiple layers of security based on my 12+ years of professional web development. It is designed to be easy to use in order to bring in new users who are not tech savvy or familiar with crypto. I also plan to release a "pro" version that functions like blockchain.info where the user is in full control of their wallet. Before you ask, I won't be supporting any other coins.
That's very cool to hear, and congratulations on reaching a solid state of development
What I think would be more useful though, personally, is the ability to rapidly support new types of alts. Like say hypothetically I care about PPC, NMC, and DVC in addition to BTC...then that wallet does me no good (other than BTC support, which there are plenty of other wallets for). Just a hopefully-constructive criticism.