If you want more recognition, blog about technical topics and create useful open-source projects.
I can tell you that no company ever has contacted me after seeing that I have MS in CS. That's not indicative of anything and after few years of professional experience, you're judged on your past performance and not your degree.
Plenty of companies contacted me offering job interviews after seeing my open source work that I wrote about on my blog.
From my experience:
1. With 8 years of experience you're unlikely to learn anything new and interesting. Unless you have only coding-to-a-spec experience with no research and learning involved.
2. With 8 years of experience, I don't think anyone will even look at education field anymore. I didn't when I was doing interviews.
3. You've got 2 very different goals listed: "more advanced knowledge in the field" and "more recognition for my skills". You can easily do the first at any point without the second. EDx, published MIT courses, published research papers, etc. are available to you right now. Are you using them already? The only thing that a degree will give you is someone to talk to in person about those things - this may be a great thing, or not. Depends how you like to learn and who is available at the university you're thinking of.
Personally I had a few years of work experience already by the time of starting MComp and looking back: It was rather boring to spend time on stuff I already knew. It was cool to get really advanced people give you specific papers to read. The final project was painful - I never want to write ~80 pages on anything ever again. I don't think it helped with my hiring either - it was more just the professional network.
These days I try to pick up one EDx course at a time, every once in a while, or do some Rosalind problems to learn new things.
Gates, Zuckerberg, Spiegel are college dropouts(ivy league of course!). Don't think the industry cares as much about degrees as you are assuming it to be.
However, you would find something else that you aren't looking for. You'll get back to univ life, breaking away from the monotony of regular work. That's fun. You'll have time to see things in new perspective, come up with new ideas. You might find some excellent peers with whom to team up for a potential startup. Also depends on the country/culture/school you're in.
Unless someone has < 3 years of experience in the field I basically ignore the education section on their resume. I will look for relevant certifications, and any job/technical related training, but experience is worth so much more than a degree in my book.
As for getting recognition for your skills, you'd be better of doing any of the following:
1. contribute to open source projects 2. start a blog, write guest posts 3. contributing to conferences as a speaker. 4. publish white papers on work you have done/been a part of (with permission of course)
If you just want it for personal development though, go for it, I can't think of any reason it would hurt anyone.
Experience is king, plain and simple.
That said, the best post-experience education I've received is self study in algorithms... If you haven't had the exposure from your time achieving your EE degree, do yourself a favor and hit up Kahn Academy or Coursera (or others) for a course, you won't regret it.
Lastly, build yourself a strong LinkedIn profile if you haven't already, as my best leads have come from there almost exclusively.