I agree with having the pitlane closed on the basis that that rule was removed because cars were given no choice but to break the pitting rule due to the fact that they would run out of fuel if they didnt. With refuelling not an issue anymore, the pitlane closure can be re-introduced.
I also like the idea of a timed limiter release after the safety car goes in, i.e. if someone in 1st place is 10 seconds ahead of 2nd place then their limiter is released 10 seconds before 2nd place and so on. I know bunching up is one people enjoy for spicing things up, but realistically there is almost no overtaking that takes place when they do and it is just as much a false mechanism as the pitstops.
E.g. As per our ideal of letting the teams decide, if you choose to pit twice in a race as oppose to once or never, one safety car will be the destruction of your strategy. In other words teams would appreciate the possible implications and never use a strategy that involved pitting, therefore if I want to get rid of the pitstop, I have no choice but to find a solution to the SC bunching also.