Either way, after thinking about it for a while, Blogger would eventually upgrade their system so I think it would be better to upgrade my account with them and not having a seperate account. So last Sunday morning, I merged my former Blogger account into my Google account. This is what happened:
Maybe because of the size of my blog which has increased over the years, it took a while before all my blogs got upgraded.
A few hours later (I went out for a while after I pressed the upgrade button), my new account is ready and I'm quite pleased with the new Dashboard. At first I thought the new Blogger would entirely change how my blogs look. To my relief, my templates which I've worked hard to customize is preserved.
I just loved the feature where I don't have to republish each post or the template whenever I've edited them. It makes my blogging a lot faster to publish and it got labels too. Not bad if you ask me. So, if you can upgrade to the new Blogger Beta, then what are you waiting for? Things will get upgraded sooner or later.