We have free 2x/1.5x coupons from monster park sundays, legion exp coupons and growth potions, craftable exp potions, monster park yellow exp potions, and free spirit pendants from fairy bros and event shops. We absolutely have compensation for the HS nerf because those things help bridge the exp gap between training with HS and training without it.
It's really a no brainer what they have to do, I don't understand why it hasn't been done yet. Most other unbalanced things have been fixed. HS mules? Fixed. Archmage ultimates don't have a cooldown? Fixed. AFK Leeching? Fixed. All of these things were nerfed but something was added in its place to compensate. Free EXP buffs and the decent HS node was what balanced the HS nerf. Giving other classes decent mobbing skills and making the exp curve less steep was what balanced ultimates getting a cooldown. The addition of burning fields, places like the dojo training center and AFK events that give exp/free levels was what balanced AFK leeching when party exp got nerfed. But for some reason kishin mules, which are putting unnecessary strain on the servers, continue to exist with nothing to balance out all of these nerfs. If you go on Orangemushroom right now and search 'spawn rate' you'll see posts dating back 3 years where KMS gets spawn rate improvements, on top of map layout improvements to make training more efficient. Where is that being done in GMS? I agree a V node would be a huge step in the right direction, and would make people more comfortable with farming on their main. But honestly increasing the spawn rate and removing kishin altogether would be the simplest fix from a developer standpoint, and would be the truest way to achieve balance.