I certainly misunderstood and looked at the chart wrong with my first read.

So basically you want cards to have all the functions of a max level card at level 8 but this would mean that specific combined card wouldn't be able to be combined any further leaving it being a hybrid of a max card and gold card.

Interesting but such cards will dominate Gold and below levels. I have no clue how that would affect the meta or player base overall but I do enjoy reading the ideas of others.

If its more fun and competitiveness you're after at the lower leagues, seperate leagues would provide that.