So, I had a horrible loading screen so I decided to make a newer one. It includes an updates bar that shows the latest updates in the game (top TextLabel), game logo with a drop shadow, background simulates flashing police lights, and of course, the loading sign (bottom TextLabel).
I personally feel like having the game icon as a central image gives it a default Roblox feel. I love the idea, and I think you’ve performed it very well however I feel you would benefit more from having just the text title being in the middle to give it a different and more customised feel.
Also, this is just a random idea, but you could go into photoshop > get the game thumbnail > turn it black and white using hue/saturation > importing that into roblox and put it over the gradient, turning down the transparency of the image so the background image flashes red and blue.