I love small(er) displacement bikes. Truth be told, if the 899 had been available when I bought my 1199 I probably would have come home with the 899 instead.
If you do a lot of tight twisties riding, that 899 is going to shine. Qucker steering geometry, shorter wheel base, a less agressive throttle (which means you can be more aggressive without having to fight the bike - which seems to happen on the 1199 when the road gets *really* tight/twisty).
People used to rag me on my choice of a 748 over a 916 (only $1k difference in those days) as a "Baby Duc". But the 748 was infinitely more suited for the riding I do - mainly because of the quicker geometry and the shorter "888" transmission.
If I had the funds I'd have an 899 in the garage. And I suspect it would be ridden more than the 1199.
I totally agree.
The only difference is I would clear coat the body work.
Then start to progressively upgrade the suspension, and lighten the bike where ever I reasonably could.