The best replacement for spire is steeple.

The best alternatives to spire are rated as following:
★★★★★  steeple
★★★★★  rotor
★★★  sara
★★★  sylenth
★★★  antenna
★★★  z2
★★  dye rotor
★★  obelisk
★★  synthmaster
★★  siriport
★  spite
★  into the fire
★  spitzer
★  acid siri
  siri0us
  freedom tower
  burj dubai
  i4siri

Your alternative for spire is not listed? Suggest!
Speaking about spire, one probably shouldn't forget about assistant connect.

Other search terms related to spire and their ratings are:
★★★★★ assistant connect
★★ belfry
You have in mind a companion for spire and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of spire in all years. Click on graph for more.
spire
steeple
rotor