IOI gives away the tutorial and some levels, including selling Hitman as Xbox game pass or PS plus to increase sales, most of which are to new, casual players. Frankly, IOI are more concerned with increasing their player base to make money than to prioritize game mechanics for expert players.
From playtesting, IOI knows that the new, casual player doesn’t often stick with Hitman and upgrade to the complete game because of the steep learning curve.
Thus, IOI spent time and improved all their tutorial levels. They introduced the emetic detonator, emetic gun, emetic detonator, the electrocution phone etc. in Hitman2. These provide straight forward tools to attract the casual non-expert players for straight forward kill opportunities.
The other change IOI had tried to implement wasmake 47 a bullet sponge “TANK 47”. This was quickly nerfed.
The wallbanging, fetch trick, legshot punch, fire-extinguisher-breaching charge kill, are the kind of tactics that can be one or more of : a) exploitation of game mechanics that were not intended to be allowed by IOI; b) often overused approaches, breaking the game as it was intended by IOI; c) used more by expert players; d) approaches that are not intuitive for the casual player; e) approaches that are outside the realm of possibility even within the super-spy artificial world of Hitman.
Time-limited Elusive targets was conceived in a marketing approach that was appropriate for the episodic release of Hitman. It was expected that players would be incentivized to buy the complete game, to access the time-limited content. This marketing approach failed. Most players didn’t purchase Hitman as episodes. Most bought the complete game upon release of HITMAN2016.
Elusive targets were conceived and implemented by online director Torben Ellert for HITMAN2016. Torben left IOI before the release of Hitman 2.
I have a sense that ghost mode and elusive targets are ideas that were tested, but are not worth the time and effort to expand into Hitman 3.
Sniper maps are popular and are cheap in time and effort to make. I expect pre-orders of Hitman 3 is associated with another sniper map.