As a person who has read 100% of the Sequences, I would also prefer if there would exist a shorter version. But, as far as I know, it doesn't exist yet. Someone would have to make it. Someone other than Eliezer, because this is not at the top of his priority list.

Would I be losing anything if I didn't need to be convinced, I just want to know the pointers?

You would be probably more likely to forget them. In general, longer text requires you to spend more time focusing on the idea. If someone would convert the Sequences into a PowerPoint presentation of 20 pages, a week later you probably wouldn't remember anything.

I realize how what I wrote here conflicts with my desire to have a shorter version of the Sequences, and... I don't know. Perhaps the shorter version should use other techniques for easier memorization, e.g. funny pictures.