The best replacement for ds9 is tng.

The best alternatives to ds9 are rated as following:
★★★★★  tng
★★★★  b5
★★★  klingons
★★  voyager
★★  bsg
★  babylon 5
★  tos
★  star trek voyager
  ds9000
  voyager first

Your alternative for ds9 is not listed? Suggest!
Speaking about ds9, one probably shouldn't forget about tribbles.

Other search terms related to ds9 and their ratings are:
★★★★★ tribbles
★ iraf
You have in mind a companion for ds9 and it is not yet here? Propose!



Google Trends

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ds9
tng
b5