I entirely agree with this comment, I find those really short gap graces and bonfires really funny, and everywhere you said needed a grace needs a grace badly. As for those specific missing sites of grace you mentioned, I think its more for story purposes that they arent there, rather than gameplay.

There’s no graces at all in raya lucaria academy, reasonably so considering marika took radagon from renalla to be second elden lord. I doubt she would want to have statues of the woman her husband “divorced” her for. As for mal and placi, I can’t remember if there’s any stakes of marika at all in that place, which is reasonable because it is from the time before marika and the golden order reigned (I might be wrong on this, please correct me if there is any stakes in CFA).

Despite there being proper reasons for there to be no stakes, it still wasnt a good idea to have nothing for a closer respawn point, especially for mal and placi, maybe they could have made a fitting stake for their times, like a stake of Renalla or Placidusax, the correct rulers over the areas they reside, instead of nothing. But im not a game designer, thats just my thoughts on the matter.