In opposite to combo atm I’m running a trading bot (S-10 strategy shared here) with simultaneous deals and each deal cover a price range.
There are PROS and CONS on both from a risk and funds management point of view
CONS for combo is that cannot merge deals and cannot switch off the DCA
CONS for a trading bot is that it cannot have a minigrid
The solution could be to add TP minigrid for a trading bot (which will act as a base minigrid on combo) - but then we will have a duplicated version of combo 
OR
Having a Combo with the option to enable DCA and find a simplified way of merging the deals.
Then last point which is also the most important is to find enough interest to spend time and resource in make it happens