#13 is great. Maybe doing anything else will be too much, but I wonder if you can make the icon a bit more exciting. I didn't think about it, but I do like the blue background on #17. I like the icons on #15 and #16 but I'm not a big fan of using the icon instead of the 'O'. Maybe keep them separate.
Love #225. can you try making that with a larger "o" at the front and putting "fluidics" in orange. The circles coming off the first "O" may be a bit too big. Can you reduce the size a bit?