My point is about less interface noise more focus on cards.
Made a rough fix for myself with custom css
if you need one for yourself:
.connector {
opacity: 5%;}
.inline-button{
box-sizing: border-box;
border:1px solid rgba(0, 0, 0, 0.2) }
.connector-icon {
opacity: 0;}
.card:hover .connector {
opacity: 100;
border:1px;}
.card:hover .inline-button{
border:1px solid black;}
.card:hover .connector-icon {
opacity: 100}