It's like I'm talking to myself here.
I'll always be on your case, cat, until I can work out why the RVSM element gets picked on. You and ANSA can quote all the stats you like but from our perspective, there's no change.
Problem is, your supposedly improving correct FPL count is skewed by all the hard work the surrounding FIRs do when they ask the pilots to refile and you finally get a good plan. Your cloistered view then makes it appear that the punishment is working. I hope you get that. It's not, and this is from a pit face controller.
Even GFA had to go down yesterday and he was bamboozled as to who was at fault. Until an investigation is done, you shouldn't punish in the air!
Again, if you're really wanting to improve FPLing in the manner that you are doing, you should ban all a/c until a correct FPL is filed. That would be consistent and you wouldn't have to worry about a/c type, equipment levels, etc.
Why is the RVSM element the only one you worry about???? Is anyone listening??