Ask HN: What would your ideal jobs board have/do?(Developers and Employers of HN)

Hi, I was thinking to build a remote jobs portal awhile back. I decided otherwise given all the portals already online. However I am not completely satisfied with what is on offer. Just wanted HN's views on what they think would make for an ideal remote jobs board for them. For instance What kind of filters would be of use to help find relevant listings quickly? Would some level of standardization to a job description be of help? What all vital information about the job should be stated upfront - Like AirBnb does for the rental spaces (AC, Rooms, Pets allowed etc)? Is newsletter the best means of learning about new job listings or there could be a more effective method? My main issue while going through remote portals was the difficulty of narrowing down to relevant listings. I felt that potential deal breakers such as compatible Time-zones, minimum daily overlap or location constraints, or travel requirements are usually not provided in the listing. Even when they are, it’s not possible to filter using them. I imagine that would waste a lot of time and effort having to read through many incompatible listings. Worse, if the only way someone learns about these constraints is after sending a CV and cover letter. I'm just wondering what other such problems are? Also, what are the problems that employers face when posting to job boards? What's their ideal job board?