We have a 2015 Excursion 35B bought new and have 33,000+ miles. Correct; the Excursion name badge is no longer being used, it is now under the Pace Arrow badge.
We've had a few issues with ours, most repaired under warranty, such as: shift modulator needed replaced, front air leveling valve twice, rear AC unit, thermostat, vacuum generator for the toilet, passenger seat lower window leak, etc. The latest is the movable section of the window in the bedroom fell off some where in northern Texas; I have the new window hoping to install it tomorrow. Also, after last trip, had to replace the steer tires, alignment issue (I kept thinking since taking ownership that I should have had it aligned, but never did - shame on me).
As far as the unit and floorplan, we like it a lot and I always think that if it had to be replaced, I would look for a similar unit.
Good luck with whatever you pick.
2015 Fleetwood Excursion 35B; 2012 Suzuki Grand Vitara toad