Thank you for your quick feedback. Here is the logo left alone without the tag. Also taking your advice on the O height I think scaling it down makes all the composition stronger.
Thank you for the feedback yesterday and sorry for the late answer... I was not at home and could not make the requested changes. Here is the new version... bolder font to guarantee the logo stands out on its own, I maintaned the 2 in superscript because I think it works better this way and gives a little something to the logo making it different from the bunch.
What a great great surprise to see my concept rising on the rankings... I came up with a new idea I could incorporate in this concept. Playing with the "O" from the O2 to give it the sense of the oxygen... hope it makes sense! :)
Let me know if you have any ideas! :D I'm here to work, you know it!