Think Leeds may have a quiet year because of the large number of key departures, it'll take a bit of time for the new guys to settle in. They'll still be there, or thereabouts, just not top IMO.
Saints look a bit iffy at Fullback depending on Lomax's health and possibly Stand Off depending on how Burns feels like playing. Wigan's centre options concern me, as well as Tierney being full back until Easter. Huddersfield have just lost possibly their best player because of his own stupid actions, but their signings are decent. Not quite sure they'll make the top 4, but should be in the 8.
Annoying as it is, next year could be Wire's year. They've got some quality signings coming in, but it'll be up to Smith to sort out who's playing where as there's a fair bit of positional overlap iirc. Catalans will be pretty good too I reckon. Cas are improving every year, and they could secure a top 4 spot IMO.
Widnes' recruitment has been poorer than Wakefield's imo, which is why I have them coming in last. Hull KR will just miss out on the top 8, as will Salford.
Warrington
Leeds
Wigan
Castleford
Catalans
St Helens
Hull FC
Huddersfield
Hull KR
Salford
Wakefield
Widnes
Leigh to get promoted following the 8s with Widnes going down after losing the 'Million Pound Game' to Wakefield.