I was thinking about the same thing. What area of progress?
In coming offers: I would love to have more!!! but other members shut down their trading because they have more than they can pull and ship in a timely matter. If you don't you may be trying to track which ones you want and the ones to decline or just not reply to.
Sending out offers: You are in control there. Send out too many and get too many accepted. Then trying to figure out which ones go first along with any other offers sent to you. If not enough figuring if you need to send out a lot more to get more trades or if you need to make better offers.
In progressed. Which area there are you tracking? Waiting to send or being sent? Waiting to receive or to be received? Waiting for someone to mark completed or to mark Completed? Waiting for answers if a mistake was made? All of them?
A lot of areas to keep an eye on. I would say a total of 20 in a week, hoping most of them are in the in-progressed area. I have handled 15 without any problem. Anything over that I may be getting worried about making a mistake some place along the line unless I'm just waiting on cards to get to me.
The number of trades may not be the problem. It could be the cards or the number of cards that really needs tracking. If you have a lot of offers/counters but everyone wants the same cards. I'm hoping no one is making offers of the same card to several members in hopes one of them accepts the offer.