If we can vote id say ''NO!''. Im not opposed to see new categories, I personally would like something like Crowbar Only or a run based on the Rare Specimen achievement. But chapter based categories? Hell no. Also would create problem with what you can start with and so on.
If the original Half life has them why can't this have any
Edit: I would like to see a Crowbar Only run tho
Well I guess theres no good or bad answer to your question. In the end its a matter of personal preferences.
The main difference is there is 130 ppl running HL1 and only 3 ppl for Black Mesa. I've seen games with small community wheres mod was agreeing to create whatever categories ppl wanted and it ended by everyone being #1 on their own leader board but they were literally alone on them. What is fun in eSports or sports is everyone is competing in the same frame. To sum it up, with only 3 submitted time on the leader board, I dont really see a point in competing for the best gold split.