Not showing who got Lucille upside the head reeked of "stunt" to me.
And for a 90-minute episode, very little actually happened. The group drives the motor home to a barrier, backs up, goes elsewhere; repeat ad nauseum until finally the group gets caught. I don't really see why this couldn't have been a normal hour-long episode.
Also disappointing: Daryl, Michonne, Glenn, and Rosita have virtually no screen time and no lines -- Glenn gets to scream in terror and fear when Negan threatens Maggie, but that's about it. Likewise, Maggie had little to do except lie there helplessly the whole episode. At least Morgan caught up to Carol and that story line seems to be going somewhere interesting, with the armor-clad horsemen being a new group we haven't seen before.
Incidentally, had I been one of Negan's men assigned to one of the blockades, I'd have been in "pee-pee pants" territory a bit myself there, since by now the Saviors should know that Rick's group potentially has a bazooka and isn't afraid to use it. (We the viewers know that it's out of ammo, but Negan's men shouldn't know that.)
And I'll throw in my guess as to Lucille's victim: Eugene. He's gone from timid, fearful victim to a guy who gets ticked off if you kill the walker he already called "dibs" on, so he's already had a bit of character progression. And any need for his continued existence was virtually wiped away when he handed the "Bullet-Making 101" recipe to Rick; now the group can make bullets without Eugene needing to be there.
Johnathan