My only TLR is a rolleiflex-T.
When I look at your photo's I am amazed by the high quality and talent.
I guess Rolleiflex is a better camera but for you, you will not notice the difference.
Perhaps it is time for you to try something totally different, like a graflex.
If you get a Hasselblad, you WILL notice the difference with your Minolta TLR.