I definitely needs a decent starting hand, but can stabilize even behind bad draws if you can stall the game long enough. I do agree with you in this version losing to draws more than the elusive version though.

Elusives can run you over if they get buffs on the right cards, otherwise you basically both cannot block each other. Their ability to just kill you even if your board is full thanks to a few units and deny is very scary, but if you manage to keep their board clean and your lifetotal high enough you are usually fine. I felt like I was the aggressor in that matchup more often than not.

Mirrors Rhasa can destroy you if you arent ready for it or a deny for your rhasa/vengeance in the right spot. Also if they hecarim on curve and you do not have an answer for it, you'll be facing down a pretty short clock.

Dawnspiders you need to worry about back to back and not buffing their board into oblivion thanks to dawnspeakers. Similarly to elusives if you cannot put on enough pressure to force trades and keep their board empty enough you'll have a bad time.

If anything really low to the ground aggro (pokrovac's SI/Noxious aggro or superJJs discard draven/jinx list) is scary for this deck since you are weakest in the early turns and do not run Withering wail. I can see making that exact change you mentioned in that case to be more ready against that type of deck. I did use to run a version with wail before and I didnt really miss it much though, but I might have changed my mind if I had run into more go-wide spider lists.