I was in a similar situation coming from a 2010 242 Limited. I started looking late last year but that's just a tough time to try and sell a boat. So I decided to throw mine up for sale early spring in a few spots online and ended up selling it in 8 days to a relatively local guy. For me, the differences were huge coming from a 2010. You know those survey's you get from Yamaha asking what they could do better, engineering, what would you change, etc.? Well, it seemed like they picked mine out of the pile and over the last 7 years upgraded to/changed the things I would have from my 2010. Hinged seating, better fabric, fully functioning digital touch screen (connext), synced throttle, drive by wire, fixed bimini, better interior lighting, reengineered head compartment, articulating keel, 6 inches longer, 4 inches wider, 4 inches deeper, taller bow, taller gunwale, 12 person capacity (instead of 10), separate the bow ladder and anchor in the bow locker, push button ignition, to name a few. Additionally, some reengineered cabin designs, the helm and co-captain area is redesigned for better ergonomics and maximizes the available space. It seems Yamaha listened to the consumer feedback on those surveys.
The fixed bimini is a preference on the Limited S Eseries, of course you could go Limited Eseries, but no tower or other upgrades. My wife and I really weighed the pros and cons and decided that with the longevity of owning the Limited S Eseries, for the next 5+ years, those features will bring equity in the future for resale. And it's a LOT more boat for the bit of extra cash, but certainly will pay dividends in the long end. In my case, I picked up a left over 2016 for a really good deal, so it made the decision that much easier.
I know you say the other upgrades are nonessential to you, but I think you'll appreciate the whole package, especially the electronic throttle capabilities once you're in it....IMO.