Indeed ...
But we also can wrongly presume that Larian wish to implement Paladin 1:1 ...
Wich they (as far as i know) didnt with any class so far.

For example that so often repeated Divine Smite ...
It could be implemented as usual meele-range spell slot eating attack (similar to Cleric > Inflict Wounds) ... that will do weapon damage + adequat radiant damage ... and then either implement that spell slot will only be eaten when hit (better) ... or that radiant damage will hit every time (worse, imho).
Wich would easier the implementation of Paladin. O_O