It's just my impression - But I think the things many of us like about the 2300 family are lacking on the 2500, and visa versa. I see NOTHING on the 2500 that would persuade me to swap over - Sorry, Mr Bloor.
I ended up with an 2009R3 in 2010 despite all my initial thoughts on trying one in 2005. I am 5'8" and it's big.
I arrived there having tried a Harley briefly as a two up bike for myself and the Mrs - But it simply was not able to do what I needed then.
The 2300 was/is brilliant at one thing - Long hauls at speed, but was really necessary to keep an eye on the fuel gauge. Maybe not in the US where fuel stops are maybe more frequent, but here and the UK I have been caught doing cross country (non-motorway) runs where there have been no fuel stops for the best part of a 1/4 tankful. The 2300 was/is imo Borderline on fuel range for a distance bike - the new one more so it would seem. That would worry me. Also though my usual roads here are wide/fast enough for me to be OK on the 2300 - When I'm in the UK I find it simply too cumbersome. A distance bike, imo, needs close to 400kms (250miles) before reserve in the tank. And another 100kms in reserve.
After 10 years with my 2009 - I was ready for a change anyway. I downsized - though I still have the R3 (for now). And I am riding faster (esp in twisties) than I ever could on the R3. 100-RWBHP (ECU modified) and 170kg. My licence is in far more danger than it was.
Hand on heart I was really being drawn to a mid size Adventure type bike - I really really wanted a Guzzi V85TT , I still think it looks great, and got close to pre-ordering (via a mate who would have had no qualms about me cancelling - he can't get enough to sell) but waited ( as is my usual way) and like this guy who pre-ordered the 2500 - My heart sank when I saw it and tried it for size. I do not fit Adventure Bikes well - there is something that simply makes me feel wrong. I ended up with a baby-790Duke. It was a lot cheaper. Feels right. Some might whisper "get the 1290 SDR" - but it has a different feel.
Just my 0.02.