New herb aerogardener seeks advice

Hello all, glad to find this forum.  My sister and I picked up a Aerogarden unit for my mother.  Got it set up about a month ago.  So far seems to be going well, especially....



...that overachieving basil plant on the left.

We've got the two basil plants in the back row, thyme and mint in the center, then Italian parsley and oregano in front.  I've read the thread on pruning basil and I'm going to snip both basil plants.

My questions: the thyme seems a bit scrawny.  Is this normal?  And some of the plants seem to be growing more out that up.  I'm wondering if I should set up the trellis.  I'm thinking no, because I've never seen an Aerogarden herb setup with a trellis but thought I'd ask.

Thanks in advance, and hope I can contribute to the community in the future.