I'm formally posting to add another voice to those asking for Rekordbox for Linux. I've seen the other posts, and I understand the SOP here is someone asks for it, then Pulse comes in, says there's no plans to ever port Rekordbox to Linux as there aren't enough Linux users to warrant such action as size of the necessary support service would be too large relative to the amount of users. He'll then post this twitter thread from the game developer who released their game for Linux, only to come to regret it as the small number of Linux users submitted a hugely disproportionate number of the support tickets, mostly graphics related.
Here's why I think this dismissal of Rekordbox for Linux is wrong and the analogy doesn't translate.
Of course it was pointless for a game developer to release a Linux version. Windows is the standard platform for gaming - every serious gamer uses windows. Mac is the standard platform for creatives, especially music applications, and especially music applications where latency issues are a dealbreaker. I'm typing this on my 2014 macbook pro, as the HP gaming laptop I bought last year is currently with someone who's converting it into a Hackintosh - I figured the high processing power would be enough to overcome windows' instability and latency issues with audio, and I was wrong! I bought the PC laptop to save money - a macbook with comparable specs would be between $4-5K AUD, and the HP cost me $1600.
So as it stands, if you want a reliable, professional laptop to DJ with, you're looking at at least double the price in order to get sufficient power on the right OS, because Windows isn't up to the task, and Microsoft doesn't care enough to fix the problem.
However, think about how many people would buy a PC if they knew they could spend half the money on their laptop, install Ubuntu on it, and run industry standard DJ software on a spec'd out PC laptop, and have the same stability as on Mac.
Obviously it'd be a risk on Pioneer's part, but I haven't seen any indication that my specific line of thinking here has been considered or addressed. Thanks to anyone who got to the end of this TL;DR of a post.