Well personally getting featured anywhere is a good thing. DA isn't about catapulting writers to fame and I believe every artist should work hard for what they believe in ^^
That said, what you are doing is more than enough because if you do anymore than that, it might be seen as bias toward artists that you appear to favour (of course I know that isn't the case, but the average individual thinks in an average way) :3
In any case, writers have to do their best to make themselves known and I don't believe that writers should get handicaps since we already receive a HUGE handicap in terms of view count. Most art requires 20,000 - 30,000 to get front page. Writing can make it with about 2000 - 3000. That's a massive handicap and for that reason, I think that every writer should do their best and work their hardest.
Right now, my goal is to get on the front page with every single post I make and I'm slowly creeping closer to that, but the emergence of strong (and younger) writers can sometimes put a real dampener on progress, but by my 4th month on DA I do intend to have a market large enough to start selling copies of my self-published poetry book which is currently in the works as my uncle's team designs the format and cover art :3
Talent is but a small booster, hard work is what will win the day ^^
I think you do plenty as it is (is the main point of what I was trying to say)
-Captain Chenbeard of the Black Fedora Pirates