They will only get larger and fatter (see Triumph) ...
New Street Twin is by far sprightly and nimble than previous 865cc bonnies...
And besides ~30kg heavier than Scrambler, it feels lighter.
I recently tried Street Twin and enjoyed it a lot.
Superb build quality, great details and by far a quite better finish than Scrambler.
Engine is smooth without low-rpm stuttering and delivers a very nice torque.
However, party ends early as it gets asthmatic on higher rpms where Ducati's 803cc still has more to offer.
Considering how popular the new Thruxton R and the BMW R Nine T has been, I think it's almost a given Ducati will want to compete at the higher end of the modern-retro market.
NineT bubble already popped... reason why BMW is now targeting their product to a lower budget market.
Thruxton R bubble is still growing as Triumph is still failing to deliver enough bikes to cover such demand.
Both this bikes like many others oriented to very specific niche markets usually suffer from this bubble effect.
When announced, most of the target audience will desperately go to brand's dealer to order the new bike. After its first year, sales fall dramatically... as premium clients niche easily gets depleted.
The Thruxton R and BMW are in a different world when it comes to performance. If Ducati could make something that costs around £10-12k, with 100-120 bhp, they could steal back some of those sales.
Sure, however using testastretta 11° engine result most probably would result on a wierd version of Monster 1200!
I can't imagine Ducati building a retro bike using their modern liquid cooled engines unless they do a very good job to undercover it.
I'm afraid that result could end like Yamaha's XSR bikes... wich are machines created for one thing, turned into another and end up looking like neither...
I've ridden the BMW and it was almost everything I could ask for, it's just a bit pricey for what you actually get. I need to try a Thruxton soon but my main hang up, is that I dislike wire spoked wheels. They are heavy and a nightmare to keep looking fresh!
I got very disappointed with NineT.
Build quality is nice, engine is OK but hated its riding position, front fork behavior and its feeling on twisted corners.
Also, NineT is very expensive for a package of old parts from discontinued BMW products.
I understand that brands charge extra money for style, but... it costs almost the same as base GS model but with less quality, less equipment and less gadgets.
About Thruxton R ... I'm waiting for a friend that is still in waiting list.
So, I hope to try it soon!