1. An improperly adjusted tonearm can cause mistracking, which results in unpleasant distortion.
2. Off-center records can result in unpleasant "wow" sound.
3. LP's do warp, and that can also result in an unpleasant sound.
4. You have to deal with turntable rumble unless the turntable platter is really heavy.
5. Because there is physical contact, both the record and record needle will eventually wear out.
6. You're limited to around 22 to 25 minutes playback time per side of a disc.
Pity we never decided between the Super Audio CD and DVD Audio formats. If we had settled that back in the early 2000's, we could have a digital audio format using DVD-density discs that would have blown away LP's once and for all.
2. Off-center records can result in unpleasant “wow” sound.
Or the needle will drop off the edge.
My sister picked up the first release of Rolling Stones “Some girls” album back in the day.
It was a manufactures defect as the stylus would literally drop off the edge for most of the first song.
She returned it and it was replaced with album art that was completely different and the original art hasn’t been seen since.
Why not just use the audio portion of a DVD to pump up the sound? Most people who have home theaters would have a ready-made player capable of playing an album. More than enough room for 45-80 minutes of music on a DVD without video (other than album cover/lyrics sheet).