I will, in turn, do the same.
I also understood the sphere grid, actually I understood it sooner than Junctioning, but I just didn't find it fun enough to really get to know it better and possibly 'take advantage' of it. I also played through FFX twice. The first time I just quit when I got to the Calm Lands. I wasn't having any fun. The second time I put forth alot more patience, decided to start clean from scratch, and play it through in as few sittings as possible. I did. I didn't have the chance to do any side quests, since my friend had to leave after the weekend was over, but I still didn't enjoy myself outside of the cutscenes, most of which totally kicked ass.
The sphere grid is a fun, completely original idea. It was fun to see the characters advance through the grid and get stronger with most new movements, and the abilities and spells and whatnot were nice. The idea of advancing along on a grid where nodes would teach you different things really could work.