Ridiculous, Jackal isn't just annoying for roamers. It's annoying as anyone, that wouldn't change if we went back to the 'magic' era of people cowering in a room holding an angle for 4 minutes.
This pretend world where roaming somehow changed the game for the worse blows my mind: If you don't have roamers, it means your vertical play is all completely uncontested, which means that the defense is fucked just because we know how to play vertically now or attack from other angles now too. Like...it works on house, cause hosue is the size of a postage stamp, but imagine somehow not having anyone roaming on like, even something like Bank, a relatively unchanged map, the attackers would just have insane control over every site no problem. It's not because Ubi 'lets' people roam, it's because roaming is the natural counter to attackers doing more than just blindly running into the angles you're holding.
First off, I don't have a problem with people holding upstairs to prevent vertical play from the attackers, that's not the kind of roaming I'm even talking about. I'm talking about deep roamers that do nothing but hide and run the entire game, and it's effective so I can't fault them for doing that, but it's been too strong for a long time now which is exactly why we see the addition of jackal, lion, dokkaebi, nomad and gridlock.
I disagree that Jackal's pinging is as annoying for anyone because it's really not a big deal for anchors, in fact when I anchor I specifically say to let me go reinforce hatches just because that means Jackal might scan me on site and not my team's roamers. So what if he scans me, they know I'm on site and still have to peek me, and I'll usually know it's coming.
Also it's absolutely not a 'pretend world', I've been playing this game from the beginning and it's not just the operators that buffed roaming but people's playstyles and more specifically the map design. Look at more modern maps like Theme Park, Tower, Villa, etc to see the absolute mazes they've made to make it so roamers can dominate the map. They already changed Hereford for the worse because roamers were complaining it was too hard to get around (since you just have to watch one main stairwell and maybe hatch/ladder) and are going to do the same to Kanal where at least now you only have to cover skybridge.
This game was literally built with attackers vs defenders in mind, but play Villa these days in higher ranks and it's basically like playing deathmatch for 2 and a half minutes and if you win you GET to attack the site.