In my opinion the parklife change then gamestyle so much that for me this is basically the reason why they should release Cities Skylines 2. And clean up the game to make sure all mechanics are done in one style.
The game is now little mess with mixed old mechanics and new ones. It has to be really confusing for new players to see you can build parks as leveled up districs and also place parks as roadside buildings. Why? Similar with industry etc.
It would be nice, to basically remove the old mechanics (dont remove the props etc... just merge them with the new mechanics. So all old park assets could be used as park of parklife. etc). And then release the new fresh version of the game, where all mechanics are unified again.
I don't find simple games interesting - and this one is still very simple, just for pleasure, even if some people get confused just because they cannot focus on anything for longer than 3 seconds.