As long as you feel you have the time and know-how I don't see a reason why not. Witnesses that also take the time to create their own content and interact and educate can't possibly be a bad thing.
I've not voted for witnesses yet but if you decide to set it up I'll give you my vote.
You're exactly right. In fact, we have many witnesses that don't produce any content at all so I think that's very important. Gotta stay in touch with the community. Btw, I am now officially a witness. I'll be announcing it and submitting my Witness Application tomorrow on my blog, but you can now vote for me. 😉
Alright, you have my vote for what it's worth