I guess this is the right place for this post (amusingly, I posted this to the wrong thread originally).
Just perusing the spell list and I see 5 different resolution mechanics being used. This is just for spells in the Basic set. I mean I suppose its too much to ask to just have one singular resolution mechanic (d20 attack vs target number or always a saving throw for example) for all spells, but is it completely necessary for 5 variants on "roll d20, add some stuff, compare it to this other thing and see what happens" in the Basic game alone? That doesn't exactly scream "streamlined, simple core" (not sure if that was even a design intent though). I thought I recalled outcries against extraneous, fiddly stuff not too long ago.
If exceptions like this are embedded all over the system, that doesn't bode well for ease/quickness of handling at the table. That is especially so as game options/creatures/spells proliferate. If I were looking to play this game, this would be one of the first things that would need to be modulinated-ified-ismed by unifying all of those variants into a singular resolution mechanic.