the couple more:

6. improve load/save market by additionally saving statistics. Also during load, do restore of statistics and gains from cvs. It would allow having continuous statistics of the bot. not only local run.

7. redesign static ping pong mode.
instead of having buy X, sell Y value, you could have value for delta, for example in %.
So the logic of buy/sell pong prices will be calculated from the ping price and delta.
When pong is completed, price changes using delta and make ping price again.
This will allow to create ladder-style orders.
For example will be next sequence:
- delta 10%
- user create static ping for buy at 100.
- cat created pong at 100+10%, sell it.
after ping-pong, cat use (pong price - 10%) for create ping order at price 100.
Actual math will be not (pong - delta), but the (pong/((delta/100)+1)). It's just technical details, not so important.
So, in fact, loop for all ping pongs will be 100 - 110 - 100 - 110 - 100 ..., same as with current static mode, if you define 100 and 110
But at the same time at same market you could create with this delta orders at levels 80+10%, 90+10%, 110+10%, etc.
Also, dynamic orders could be more flexible here with such logic.

One thing that as I understand, when value is coming to the pool, you do not track pong. So, implementation of original ping price calculation could be tricky. In this case, a shortcut that avoids placing to the pool could help.