Yeah, for not sellable legendary gem that is higher than 2/5 stars should give more gem power when using them as upgrade/fodder.
It is kind of depressing when F2P/low spender players finally find a few 5-star gems that they can’t use for their build and at the same time, it feels wasted to use the 5-star gems that are higher than 2/5 too.
Making any gem that is higher than 2/5 gem gives more gem power should be a good consolation prize for F2P/low-spender players.