Anything wrong with this blind structure?

[JonnyKK]

I've been playing at a NLHE home tourny game now for a few weeks now, usually 10-20$ buy-in. The game normally plays 7-8 handed. They use this blind structure.

25/50 to start. The blind gets raised every full rotation but only by 5 each, small and big blind. So it will go 30/55, 35/60, 40/65 etc etc, regardless of how many people are in it. When it's HU it just stays at whatever it was.

How can I convince them to go with a more standard blind structure? Are there any advantages to going with the more normal structure?