Bingowings said:

In my ideal PT Yoda isn't even in it.

We are are obviously meant to be surprised by Yoda's appearance in ESB so the PT spoils the surprise.

PT ruins a lot of things, even if it is watched in correct order (that is after OT).

In my opinion, the whole idea of direct prequels is stupid. When you watch OT your imagination makes a picture of what happened before (for example when Obi-Wan is telling Luke about the past). Then the prequels are going to compete with that imagination and people will be disappointed, naturally. Not to mention PT trying explain stuff from OT and ruining things (midichlorians crap etc.)

A distant prequel is far better idea (KOTOR game for example).