Well the modern sports touring market is a very catch all generic term.
I said it before and I'll say it again... nothing has been confirmed for 07 sprint. No webapges have been updated on any of the triumph sites. Yet the new cruisers and tiger have been shown. I've only seen an artice on MCN and autonews. Both of which were also extremely reliable with their 1 litre V5 VFR for 07 news
The beauty of most bikes is that you can configure them to be more touring and less sporting if you so feel and vice versa. I have a friend who bought kawasaki's new sports tourer zzr 1400 ... like the sprint, focus is heavily on sport and yes you can also tour because its larger than a pure focussed track bike and you can put panniers on it i believe. He has gone for a larger screen and a modified seat. He is planning to put on better bar risers when he gets the chance.
The main reason I went for the sprint is because i fall into that category of bigger rider (6.3) and I want a full on sports bike but don't want to be buckled after 2 hours ride... as was the case with the GSXR. The 06 sprint seamed to have a nice stretched and leaned sporty but comfortable riding position and the engine is extremely quick. Can also do touring. If i want touring/sports I would have gone for a pan european, a BMW F800ST, R1200ST or waited for the new tiger etc.. the point is sports/touring covers a vast amount of bikes that vary considerably in their most likely roles. Triumphs tiger now can sit in this touring focussed but sporty league and they have the sprint for sports focussed but touring capable. I think it would be dangerous from a business point of view to have a stock bike straddle both camps.
I don't think there are any real tangible advantages to USD as opposed to the showa on the sprint.... if anything the showa should be a higher quality given the brand name and association with sporting quality.
Supposedly radial brakes offer better stiffness, so you get more even contact with the pads. I would have liked to have seen these myself. Although I'm sure its possible to add them as after market if the need arises. It is still a pity they aren't provided stock. the look sweet for a start