I think it will hurt the price of the 998 models..... I know that as someone who doesn't own a Spyder/Ryker but really wants to, Id much rather spend 10k on a new machine (ryker) than a RS/RSS/ST with a 998. With any reasearch at all the overwhelming recommendation on the internet and this site is to avoid the 998 and get the 1330 spyders. The 1330 is more fuel efficient, has more power, has less maintenance, and is arguably more reliable.
With the 600/900 ace engines you will likely get even better fuel economy and from uses in other platforms the engines are "bulletproof". You also get the shaft drive and easier to do yourself maintenance and easy to move handlebars and foot pegs.
The reasons not to get a Ryker will be:
You want/need more HP
You want/need a sport bike riding style
You want/need to do long tours
You want/need to ride a lot of two-up
You want/need lots of storage options
Unless you want/need any of those and you have a limited budget you will be shopping the ryker and not a used 998 spyder. For me as someone with a limited budget, who will be riding one-up, likes to do some maintenance, thinks 77hp will be enough, and likes the idea of a warranty ryker is a no-brainer. All this is pending a test ryde of course.