Topic: unlimited uprages
I was thinking it would add a diverse aspect if most spells and thief actions as well as items could receive unlimited upgrades. Obviously some things could not fit in this system (defense from items for one) but those could be limited.
For the offensive items the % could just increase with each upgrade, for armor the defense section could just taper where it is but the HP% could increase with upgrades after that. However each upgrade would still cost more, making the investment for items very costly.
For spells the damage spells could just keep increasing. For other spells
Δ*D = ρf Δ*B = 0
ΔxE = -δB/δt ΔxH = Jf + δD/δt
and THEN there was light.