Octavius set’s main focus has always been phys RoK, forcewave and Aegis of Menhir. I myself have played a paladin focusing on RoK and Aegis.
However I feel that octavius is quite like the Justicar guard set (which is focused on fire forcewave, but is generically good for most fire attackers) but for phys builds. While the full set can’t be used like justicar, 2/3 piece octavius is very handy for many builds and better than alternatives with conversion like Targo and spellscourge (especially for phys builds having inquisitor).
Few of my builds using Octavius set for example -
Phys Forcewave Death Knight - https://www.grimtools.com/calc/xZyGaRK2
Had made this build pre FG to try and squeeze as much conversion out of DK as possible. Have been updating it slowly since.
2h Phys EoR Warlord - https://www.grimtools.com/calc/bVAaM6oV
Kinda low on attack speed, but I really wanted to use Gutsmasher cyclone (PoE 2h phys cyclone nostalgia). It works pretty good even now, I have also been testing similar Sentinel and Oppressor setups but those have issues with OA/DA and resists compared to Warlord.
Phys Righteous fervor Paladin - https://www.grimtools.com/calc/dVbG8WYZ
Newest build I have been testing out, quite nice and tanky with decent single target and great clear.
Also have a Phys cadence Tactician which is quite similar - https://www.grimtools.com/calc/L2JRKB72
this one feels a bit more tanky but lower single target and clear, still good enough for most endgame I would say.
These are just the builds that I have tried but I think there must be many more builds which are reliant on the Octavius pieces. In my opinion it would not be a good idea to remove the conversion from these pieces and maybe just nerf the stats (Though this is upto Crate ofc). Just wanted to make this post to discuss these changes and how others feel, any other builds that would be impacted and alternatives.