They should've opened the season with this.
I enjoyed seeing emotional Sheldon, the writers played it cool and didn't go too far into it and his worry for Leonard was masked relatively effectively with nerdiness.
I don't mind the show exploring Stuart's character more but he shouldn't become a permanent addition to the gang.
They should've concluded the Penny-Leonard problem, leaving it open ended just suggest more mediochre relationship drama
Overall just short of an 8