what problem do you have in bitcoin.
Nothing much , IMO We just need bigger blocks to go mainstream and with going mainstream the price will increase logically ... also more anonymity won't hurt (Hopefully developpement of Darkwallet will finish) .
It is quite the opposite. Even with bitcoin as of now was able to processing trillions of transactions per second - plus confirmation times would be really instantaneous, there is no guarantee that it would go mainstream. Block size issue is not some anchor which is preventing bitcoin to be popular.