Media Spots are literally the reason I joined 7 years ago. I enjoyed creative writing, and I enjoyed hockey and fantasy RP type things, and VHL happened to be a very specific thing I could do all of those things. Sure, I haven't written many (if any) since I started simming, but that's in no small part because I started simming.
You know as well as I do that DT is full of it when he says "These ideas might make me want to write again," that what he really means is "I might write a few articles before returning to not write." I'm not trying to pick on him, but it's just like when members are like, "My interest in the league might respark if I was given X job," and then they get the job and they still end up going inactive. Decreasing the effective 6 TPE word count isn't going to get more people writing. If they don't want to write, they're not going to.
If anything, we could make a 3-4 TPE MS option that has a word count of 250-300 or something. Maybe you can do two of those (if it's 3 TPE), but you can't do one of those and one 6-PT. That way, it's less pressure than a 6-PT, but worth more than welfare.
As for specific topic PTs, we've talked about it before, and it could probably use more discussion. I think what was brought up before is that maybe you'd get extra TPE for writing about a specific topic. I actually like your suggested version here better. If someone wants to write about something else that week, they don't get a TPE "penalty" for it, but they just have to hit the word count. The only potential issue is QC.