See I have a problem with the "pretty much every game" thing. Surely we would see it more often then?
The simple truth is that most of the time your composition doesn't allow for you to kite "way more easily" using the pull trick; the option to pull is there still with a lot of compositions, but the execution is not easy.
If you're really all that upset about pull trick in age 1, we could change native scouts/envoys/etc. to behave like treasure guardians (ignore formations), but meh. Don't really like this personally.
About Kaiser pulling cannons... come on, lol. Tabben went for the laziest possible composition in that game--ofc he's not going to be able to catch cannons + fusiliers. Most of the time pulling your cannons is honestly not very relevant since they're usually in bombard mode anyway.
Edit: Besides @
Hazza54321, aren't you one of the players who complains the most about how the game all comes down to one big fight and sometimes nothing else seems to matter? Surely having more ways to disengage from fights or otherwise outplay your opponent can only be a good thing in this aspect.