I do not intend on creating this thread as a poll, but just to discuss it.
Should the 737/757-200 replacement feature winglets (or raked wingtips) as standard? The 787-3 has blended winglets, and the 787-8 and 787-9 have raked wingtips. Since Boeing has been using these recently to improve performance of these aircraft, I think Boeing should perhaps consider using it on the 737/757-200 replacement.
What type of winglets:
Conventional winglets would probably not be the best option as it would extend the wingspan too much, and the 737 replacement is likely to have a new larger wing.
Raked wingtips may be better, but for an aircraft this size, would probably not be as good as blended winglets.
I personally think blended winglets would be the best option for this new aircraft family.