Something that I personally feel unfair about the H1B lottery is that it doesn't consider where you live and what you are currently doing. Students that graduate through a STEM degree get to work for 3 years in their OPT (Optional Practical Training). This extends then to them having 3 chances (one per year) at getting the H1B. Now what's unfair is that an employer in the US can apply H1B for employees living oversee…
Side note: my understanding is that there’s already a secondary lottery for people who hold a US masters (the advanced degree petition). If you are not selected in the first lottery, and you meet that condition, you get placed in a second lottery which has much better odds as there are far less people who meet this criteria (it also makes up almost 25% of the total H1-Bs granted). So basically each year you have 2 chances, and there are better odds for one of those chances.