Remove the tails. The performance boost i got from doing that was tremendous. From my experience, having the tail on the same level as the next note (e.g. in vanilla mania skin) always makes me release late since I always think that I should release on the end of the note when I should've released on the start of the note.
IIRC Jianshy recently made a pretty good looking bar note skin with this kind of LN, try checking their twitter. For circle notes try CrewK's/plutes' skin