What you believe is the biggest issue for the winrate currently( Feb. 2020)?
Current observation...
Capturing is lower but not significant enough to cause current win/lose rate. Aliens have won before with close to no captures thus does not explain current issues.
Shotgun meta-more or less has not changed at all
LTB-TOW Nothing changed still OP when on the field but doesnt always appear or make much a impact
Alien skill, might have less robust alien players but if this is the case finding ways to make aliens more fun are needed or we got to accept that when robustos play aliens it will always be unbalanced. Generally though don't see much differences in alien skill. Saying that aliens need nerfs for robustos to play is horrifically bad idea but every so often kicked around, would just make it ONLY robustos can carry the aliens... were they can easily get sniped and killed by nades, fire support, rpg, bad luck, and other stuff.
Any rate common alien players are still seen with robustos sometimes giving that extra umph so doesn't explain win rate.
Mortar? Still pure ass in special conditions but rare to see full abuse of it.
Metarushes? Different month same ol metarushes, still constant
Known game changing factors...
Fatty Meta is in, basically go all into fatty bombs and just delete the aliens. Logic is bomb drops about 3-6 seconds after ordering for drop so from laz to drop you got 5-10 seconds to run before instant dying.
Main issue with fatty meta is it does not explain all instances so other underlying issues are at play.
These are my observations give yours. Main goal is to find issues for aliens when dealing with marines and find causes of low win rate