Base number of Friendship points I usually get per character

near-UNAVOIDABLE POINTS FOR EACH COMPANION:
+1 Jotaro (join against Kak)
+1 Jotaro (tell his mom you're friends)
+1 to all but Polnareff and Iggy (Say enthusiastic yes to quest)
+1 Avdol (allow Avdol to fight Polnareff)
+1 to all but Polnareff and Iggy (fight Pol solo)
+3 Joseph (Get Stroheim)
+1 Jotaro (Fight Tenille)
+3 Jotaro (fight YT)
+1? Joseph (Needwagon for Speedwagon)
+3 Avdol (take his place)
+3? Pol (take avdol's place)
+1 Kakyoin (murder Hanged Man directly)
+1 Jotaro (fight fireflies)
+1 Joseph (fight fireflies)
+3 Kakyoin (join at hospital)
   +1 Jotaro (skip Alessi fight)
   OR: +1 Polnareff (join Alessi fight)

TOTALS:
Jotaro: +9 to 10
Kakyoin: +6
Avdol: +6
Joseph: +7