I have a 2019 27PE and so far love it. I have not done any modifications to the suspension as so far I have not found the need to do so. The first things we did was to build and instal sliding drawers in the pantry, additional shelves in upper cupboards and dividers in lowers. Also installed a hard wired Progressive industries Electrical Management Sytem in the power bay, a Black Tank flushing system, attached the dinette plywood seat lids to the back rests with piano hinge and a grab rail for the screen door.
There is another thread that folks have discussed some mods they have done or are considering.
As everyone of these units (floor plans) is something of a compromise there are always areas with room for improvement. Fit and finish is for the most part good, but we had to reattach the dinnette seat rail supports as both exterior slats were far from level and one had only one screw in it. Minor but irritating non the less.
Under the "Free Advice column" be extremely critical during your walk around; list absolultey ever item you are not 100% happy with, present it to your sales team - especially the Service folks, not just the sales person. I have found the service department is always in full support of your requests - sales not so much... They just want you to "Take it and go!"
Arrange then and there to have them address the list prior to you taking the coach. Especially in these times of extremely long lead times for service and parts. Otherwise you could find yourself waiting until October for the work to be done. Again, even if you think or know the fault is something you could easily repair yourself, have them address it. After all you're shelling out a LOT of money for a descretionary item. You'll have lots of opportunity to repair things yourself later on (HAH)
Good luck with it