Conversions are my biggest issue when it comes to actual game clock time wasting, especially when it's a gimme from in front of the sticks but they still have to go through their whole setup process to kick it. Just boot the ****ing thing dude and let's get on with it.
Stop the game clock and give the kicker an aggressive shot clock to take it or they forfeit their attempt. If you ain't good enough to slot it over under time pressure tough titties, get better at it. Goal kickers are getting too good kicking from out wide as it is anyway. Should be more reward for scoring up the guts or award an instant 6 points.
Otherwise all goal conversions and penalty kicks can be taken by both teams over the 15 min half time break from the relevant parts of the oppositions half. Fox/9 will have the no add break but gives something for fans to watch instead of some tragic half time "entertainment"
If your main guy has a stack of conversions to take but still needs a 5 min break over half time you can share the kicking duties with other players as per normal.
**** the half time coach talk, player can get the msg from a player or trainer later. Or you have a nominated 18th type man specialist kicker that doesn't need to be in the sheds at half time.
Do the same at full time, could lead to some fun contests between kickers to win the game after the 80 mins. If the game isn't close fans can just leave if they don't wanna watch the non-result effecting goal kicking.
Traditionalist would hate it but the game time wasting and general boredom of walking to the mark and lining up kicks calls for changes.