I'll not allow the alien to be called weak in this household! Fixed ;)

The alien isn't weak. There are 4 - 5 pistols shooting at it so of course it'll collapse. Once the alien sees you it's nearly impossible for you to get away. I've seen a competent alien take out 4 - 5 people which it should do to encourage spreading out. More vents for the alien to lurk would be terrifying.

Flashlights becoming more necessary would be great, there should definitely be flickering lights or even entirely shut down lights in parts of the map. Especially since people just like to gang up on the alien with current meta.

Ultimately it would be awesome if the alien could disable certain terminals by destroying them so lights go off/flickering, engineers could repair them.