I just hope that times when freezing of IE meant that whole OS got frozen too are over. Anyway the design is very clear. They had to redisign it this way because whole Modern UI (metro) is based on minimalism, simple shapes and typography and MS will for sure try to include this browser in Win 10 mobile version. But I'm afraid of plugins which can totally ruin the fresh look and also other things like bookmarks... Anyway if in MS they want to get back on the top then they have to do their best and I guess they know that and attractive design can't solve everything. Mozilla and Chrome are really tough competitors.