yes, it starts to make sense now!
It's more of a help than a hindering to learn the forms in parentheses and know something about Ablaut. Maybe you can interiorize this as technique for quickly dealing with verb forms, knowing where ablaut is more likely to occur, how sigma changes sometimes the augment (Exw, but esxon), etc.... (?!)
It was easier to learn Pheugw this way.
I also think about developing a technique for quickly recognizing verb types in greek, cataloguing them in my mind according to their types:deponent, -mi, deponent in just such and such parts, or defective, etc...It's a little weird, but I think it works at least in a more regular language like old english where verbs belong to seven ablaut grades and the few exceptions are mostly explained by the sound changes.
Could greek also be learned more easily having in mind sound changes that explain the irregular verb forms?