Right now, I stopped playing in the PTE using multiple accounts. It is just too hard to 'balance' 2 accounts. What I meant by balance, I mean that the production rate of every resource must match the production rate of the other account for the respective base. It is usually easy for the 1st base, cause the layout is virtually the same. The 2nd one and so on becomes insanely difficult. You have to choose similar if not identical layouts, otherwise its going to be hard to sync them.
Getting similar, if not identical RP is also an issue to this. I may as well play them de-synced and at different times. Also Nod seems to lack an anti-infantry option for advanced units. The only ones that count are the confessors and avatars - it is humorous to squish soldiers by running them over with a 15 foot mechanical giant.