To asnwer your question: yes
I created Embark airlines by myself and I feel very proud. It is great to have so many people coming on board with wonderful ideas wanting to help.
If you create a original VA (not based off of a real one) it serves more of a challenge, but is very fun!
There are pros to creating a VA based off of a real airline, fans of the airline are likely to join it, routes are pre-fabricated, Fleet Planning is a breeze, but it takes the fun out of the creativity aspect
One hard part was finding which aircraft people like to fly, and where people like to fly the most. (Hence all of my random polls). It is super fun though! I would definitly reccomend.
I found you have any questions please PM me!