Re: I think I can build a more secure web wallet than any other so far.

If you really after a web wallet, then watch out myTREZOR.

It will be as easy to use as any web application with no sign-up. Your keys will be in your hand, literally, in a high security special purpose device, safe from any hacks.

http://www.bitcointrezor.com/news/2014-02-10-mytrezor-bop-bitcoin-server

Here you have its first public demo in Berlin:
http://vimeo.com/90026733

Agreed. TREZOR and other hardware wallets are strong security made simple, they're what's needed for bitcoin to go mainstream

I am really looking forward to the Trezor (I ordered 2 last year) but I think it will not be for everyone. The retail price for this thing is yet TBA and I doubt that it will be anything below $100! Not much for total security if you are a "whale" and have lots of bitcoins in your wallet, but too much for the bitcoin starter.

So there is still room for another "middle security" wallet solution, easy to use for the average joe but still secure enough so that it is not easily hacked.

You're right, now the main wallet is safe and simple to use.

Only safe and easy to use in order to be widely used, so you have to consider these two questions.