Hi Janus
Cubase can deal with the problem very easily.
Maybe you have to fill in the missing blanks or lengthen some notes that do not quite reach the grid lines that can put timing out slightly.
I would have thought Cubase basic would do that.
If the players played a style and listened to it and then record a song and then listen to each style track separately ,they would notice the difference unless they are a machine.
If you want to keep a good library of your songs it is best to to a good job in my view or the best you can.
If anyone takes Genos songs to a pro mixer or masterer, they do not want the flack in there as i read somewhere some time back.
If you just play gigs out then it does not matter, nobody would hear differences on a p.a. with the atmosphere in the room.
It does notice on recordings. Not if you are a Metallica fan though!!
All the best
John