I'm glad you mention it. I am preparing a guide for everyone on this subject. Maybe next week I'll be able to publish it. I will take into consideration some points that you mentioned in my guide.

Is there any news? Do you need help with the guide or are you a GURU of that job?

Proper image hosts like Imgur, ImgBB and Postimages all have some sort of deal with content delivery networks (CDNs) to basically cache user images on their own servers so that they 1) load faster and 2) do not strain the image host's resources.
To be honest, I think that CDN is a waste of money (pardon me if I'm wrong) and since the image limit on TalkImg is 2.5 MB, that should be very easy to load for everyone all around the world. I think that loseless compression or automatic convert into WebP formats are better alternative but again, if I'm wrong, tell me.
Friends, I recognize each sat already donated to this project, as an act of trust in it, I do not want to disappoint that trust at any time. That's why I don't want to make decisions that don't have the support of the community and could jeopardize the original idea of the project.
You are amazing! The reason why I asked you if I could upload images that aren't intended for Bitcointalk, is that TalkImg is a very good platform and it's already in my hand's muscle-memory. I automatically type TalkImg when I want to upload an image online and I think that's a very good achievement of yours. I believe, there will be many like me.