i mean the only different i can see in the coding is that for blast cone, it always spawns in 1 spot the the game only has to have a set number of land locations.
where as ziggs stachel charge the distance varries with how close you are to the stachel and it can be placed anywhere. so if they coded the blast cone of that SPECIFIC area it would be harder to transfer. but i do remember them saying plants had random locations at one point.
as for using it as players? i mean, yes, you do normally detonate it immediately but it still would be good to experiment with to see WHICH walls u can get over and which u cant... and where u would need to place the satchel to be able to get over which wall.
satchel is EXTREMELY hard to use properly with consistency, i mean sue.. i can get it right about 75-95% of the time but.. still its very unreliable. plus the delay makes you unable to dodge most skillshots like other dashes can.
which is one reason i hate that if a snare DOES land on me i don't move when i detonate it. i feel i should still be snared but like any cghamp getting snared during a dash. i have already CASTED the spell the snare should take place at the end location as long as i have the satchel and i am within range. that or there should be a way to hold "ctrl" like a self cast to make it instantly detonate when it lands