However, generally I believe that player welfare is something Rugby League as a sport gets massively wrong.

There are what effectively will be back to back "Easter fixtures" for the final four fixtures for each club. Then there's the possible catch up fixtures for Catalans and others who have played less games. There's going to be some very odd results, and keep in mind SL has to keep it's side of the Sky deal for getting through 2020.

The issue here is 3, maybe 4 fold.
Number of games and frequency of games.
Injuries, due to the above but also due to increased number of tackles and the ball being in play for longer during games under covid rules.
Absentees due to covid tests itself, including isolation periods.
Finally, with reserve/academy games not being played and certainly with some fringe / younger players having been furloughed, they cant suddenly play on a Saturday or, whichever day.
Also when a game is postponed because of issues with the opposition, it seem wrong that a team then has to play an extra game in a very short space of time.
I realise that we are in difficult and unprecedented times but, the postponements/missed games could certainly be a major factor in who makes the semi's and ultimately who makes the GF.

Many fewer games are played now though, than in the days of the 14 team Championship, County Cups, Regal Trophy, SCCC and Premiership. Those often played with smaller squads of players. So things aren't that bad. Are they?

Brian McDermott suggested having shorter matches before the restart. I thought it was a good idea then, even more so now. 3 thirds of 20 or 4 quarters of 15.

I hope not. That's a small jump to teams of offence replacing a team of defence, each time the ball changes hand, and who knows what else.