If anything, this exposes the ability to push Morg's out of mid lane during early level trades, since she'll have to auto minions several times up through W rank 3 (or wait for the caster minions to take some damage before dropping the W, since starting with 41AP @ level 1 from runes + Doran Ring leaves casters with ~10 hp at rank 3 W). It will be interesting to see what kind of win rates Morg will have in top, mid and bot after this happens, and if players can adapt to being a slightly more active and mobile Morg until after their first back.
For support Morg, I think the issue was more the fact the damage scaled really well when an all in happens level 6. Flash, ult, ignite, hit with a Q and then drop the W. It does rather significant damage at that point, especially when coupled with a teammate attacking. It'll still bring in the gold as easy as ever, just if you want to all in bot now, I hope you've autoed once or twice more before committing to the all-in.
Edit: removed jungle, replaced with bot. -_-.