From what I’ve been seeing its almost standard practice now for 30-40 player level monsters to max out their nuke skill (rock throw/lightning strike) then basically be able to wipe a team even at stage 1 just through nuke damage alone. Early game is rather important for hunters and if monsters are just as powerful at stage 1 in terms of nuke skills as stage 3, well it heavily tilts the favor for the monster. Specially with some of the nasty hitbox issues involving rock throw. Given how a lvl 3 nuke skill can nearly instant-kill anyone with 1 strike, and just about kill anyone with two, it makes it all too easy to just hit a nuke skill swoop in and you get a free strike on that player early game even though your stage 1 and should (for all intensive purposes) be trying to mitigate damage rather than dealing it. Its even worse with the already problematic wraith who can either lvl 3 supernova and wipe any one player given the chance, lvl 3 decoy and basically have it do your damage for you, or lvl 3 warp blast and never get domed because of its escape range.
So I would suggest either restricting lvl 3 skills to stage 3, or restricting max skill level to your stage lvl (IE max lvl 2 skills for a stage 2). Though Im sure some here would think that too be too harsh. So at least restricting lvl 3 skills would help the shenanigans of taking easy strikes from a stage 1 monster.