Is there an option for the splitter to create chessboard like tiles same as in Garmin maps? Still like to use the maxnode feature and the alignment to the map grid.
No. You would need a real chessboard pattern for that as any adaptive approach has small tile sizes in densely populated areas and large ones outside. Maybe you want to be routed around large towns anyway? :-)
I think the splitter could be programmed as such quite easily (though I don't know the source code). For instance, you could start with a raster of large square tiles and divide each into four quarters if there are too many nodes inside.
But this would leave you again with different sized tiles (one big square beside 4 samller ones), which could disturb the routing, if the previous observations are correct.