i feel the issue is two fold and similar to marines in a way
preds either have really shitty weapons (im looking at you, old glaive) or really fucking OP weapons (clan sword). LPC (really shitty) and HPC (really fucking OP, especially against marines). their armor (alright) and their cloak (pretty fucking OP), no traps (ok), drop trap (pretty fucking OP cause it disables xeno abilities and makes you slow as fuck, and makes marines in general slow and stuns them).
there's no middle ground so no one ever wants to fight a xeno 1 v 1 because preds never pick their shitty weapons as even a boot knife marine naked can beat their shitty weapons, but their OP weapons can kill entire squads if done right, so marines either ignore preds or chase after them in full squad strength (delta squad moments)
the other problem is that predator has been buffed because it is a ROLEPLAY faction; predators haven't gotten their strength because of their ability to hunt, they got it because Predators are the CL on steroids. while the CL is protected by OOC rules so he doesn't get shot by marines unless there is a very good IC reason, Predators can be shot at for any reason, so they got buffed accordingly so they can survive marine and xeno encounters. but they ARE NOT a ROLEPLAY FACTION; their role is to hunt and kill shit, they are the hidden 3rd faction
this is why ive proposed so many times to remove all the rules on predators but in return nerf them accordingly (aka HPC with very high cool down or limited shots similar to SADAR, LPC on moderate cooldown with charge packs similar to HPC, cloak reverting from long cloak to short cloak like scout cloak, keep armor the same, keep stuns, reduce some of their passive healing / heal crystal strength, just as a start)
but this has been denied constantly either by devs (understandable, no one wants to work on predator code cause, from what i remember being told, it sucks) and the predator faction leads / players ("WE ARE A ROLEPLAY FACTION!!!!!!")
to the latter i say, no. you are not a roleplay faction. the CL does more roleplay in a day than the predator does in a month. the predator faction has always been a OP TDM faction hidden behind roleplay rules because no one wanted to code a better way to make them not a TDM faction, so instead the players are chained behind roleplay rules; much like old metagame rulings were there not because the server was high RP but because coders didn't know how to code in a solution to the problem
tl;dr preds are a TDM faction not a RP faction, remove their rules and adjust their stats / abilities accordingly so they can truly be fleshed out as the TDM faction they were meant to be