So IRL wants to ink a longer term deal with Barber but they'd like to see more passing.
My suggestion is to take the kink out of the top of the museum turn. Both cars and bikes go straight through it but you have to go through one at a time. If they took the kink out then cars could dive into the turn off the straight coming out of the hairpin (Charlotte's web). Side by side cars coming through the museum turn would be visible to all the spectators on the back stretch and would have to be resolved before the chicane. Finally, the kink is completely unviewable from any spot on the track and it would only be a small part of the track that would need reworked. Otherwise, you'd need major track renovation to get a passing spot.