I can see why the seller of modules would most definitely want the subscription model and the buyers not. My site has been running for ten years, if a $30 mod I bought when I started was on a $3 per month subscription model, that $30 would have so far cost me over $350 with no end in site for the bleeding of cash if I continued to use it. Obviously as a buyer of mods, I have no interest in a subscription for a mod. I'd rather pay once and be done.

If you keep the one-off buyout along with the see more subscription, by all means why not? However, I get the feeling from this that the one off payment model won't be here long if subscriptions are initiated.