New Netherlands on the Hudson (55 total years) and New Sweden on the Delaware (17 years) were fairly short-lived colonies that were taken over by England and which were located between more populous colonies to the north in New England and to the south in Virginia.
Could the Dutch or Swedes have established their colonies elsewhere, and could that have resulted in greater longevity for them?
My initial thoughts go to eastern seaboard locations north of early New England (Basically Maine or Portsmouth, New Hampshire) or south of Virginia (on the coast of OTL Georgia or Carolinas, although South Carolina seems like a neat location to work with). But you may propose other locations further afield.
Would the Dutch or Swedes have found Maine or the Carolinas sufficiently interesting for them to invest for any sustained period? Would the Swedish colony, wherever placed, been as likely as OTL to fall to the Dutch? Would the Dutch colony, wherever placed, been more likely as OTL to fall to the English or later British?