I do slightly disagree about things at stoke. Things did improve (abet with the aid of volunteers) everything was done to help when carmarthen ran as the mdl team. The ghost teams were destroyed by the BSPL premier junior league which has now been kicked deep into the long grass.
Entry level? That depends which door you are using. MDSL / Northern junior league is Entry level, where the riders pay their own way. The NDL is the third level of professional speedway, there to develop riders further in theory.
I would say that it has already watered itself by the look of the river across the track. Air bags are great at becoming water holders days before a meeting but then dump their contents as soon as blown up, flowing across the track causing soft spots.