Content, as far as I'm aware, was only a recent addition to the community supporter account benefits.
Content was the selling factor for me.
Make the boards searchable with full features for everyone, whether they're a subscriber or not. Keep the "gold, silver, copper" (or whatever levels it is now) but give them non-essential perks, like a gold, silver or copper icon next to their nick or something. Whatever it is, it shouldn't be on the level of getting something for your money. You shouldn't have to pay for things on a forum.
Seconded. Search is a basic function that almost any board offers, yet by not allowing people to generally use it, that feels like the function is being "held hostage." Certainly, I was not going to subscribe just to get that. It took content, a reward for my money beyond the basics, that got me to subscribe.
I considered unsubscribing a few months back for various reasons.
1. Moderation of edition wars. I really dislike edition wars. When a topic on the subject came up, a moderator (and I won't name names) basically threw up his hands in defeat saying that nothing could be done. The conversation upset me, particularly since I've worked on a forum myself to eliminate the problem. I know these forums are bigger, so it's a larger job, and I have a great appreciation for the job that the mods do. I brought the issue up with Piratecat, and things began to get better after that time. I was glad for the work Piratecat did, but the whole incident leaves a bad taste in my mouth to this day.
2. Value of news. There was a time when I would get news here before I got it anywhere else. It was daily and fairly comprehensive. I used to be able to find WotC news here first. Now I find it first on WotC's site, which I now visit daily. I don't think the news is as comprehensive or frequent as it used to be. Perhaps I need to get my RSS news reader going again.
3. Value of content. There isn't a lot of content right now that interests me. I liked getting War of the Burning Sky, but right now, I'm just interested in the 4e conversions. Beyond that...not so much.
4. Value of boards. Truthfully, a lot of the discussion doesn't interest me. That's why I don't participate more. At one time, I enjoyed reading perspectives from industry insiders, as well as seeing news I wasn't getting elsewhere. Now, a lot of it seems like the same-old, same-old. Part of that may be due to me gaming for 19 years now. After a while, the topics get redundant.
(As a side note, I appreciate that these boards are more family-friendly than RPG.net. Some folks over there have a mouth like a sailor.)
5. Money. Times are tough right now. Every dollar counts.
I don't know if I will cancel my subscription or not. I'll just have to wait and see how things go and give it some thought.