Wow,
I did not think that I get such wonderful reply…
Very many thanks for all the answers…
Each set of the responses is explained fantastic …
It is very pleasing to hear that quite a reference to Swat4 is there…
The answers are very satisfactory …
Many Thanks…
An optional crosshairs would be really very nice… (Just like Swat4) - (For those who like to play with crosshairs …)
If your someday create a multiplayer mode, it would be really awesome if it would resemble the Vip escort of Swat4.
The largest team spirit and cohesion of the players is reflected in VIP mode. It is simply stunning to escort a VIP as a swat and to protect him as a “TEAM”. Or as a suspect to kill the VIP (After he was detained for two minutes as a hostage).
Further requests and suggestions that has been forgotten to mention:
As you said that Swat4 was “among the various influences of the game”…
- Camera use by other players:
It is very helpful to be able to use the Head cam from other players. So you know all about the situation in other areas. This is an enormous advantage, which also makes a lot of fun in Swat. Thus, team partners better communicate and retrieve information (about the different locations). So you can react accordingly better…
It would be very unfortunate if that were not present in this Tactical Game.
- Lean:
It brings a huge advantage when the opponent only parts of his body shows.
Many Tactical gamers complain to other games because of the low possibility to lean…
The best lean possibility is in swat4. One sees there more than 90 degrees when you lean…
In other games u can see only 20-25 degrees… That is very unfortunate and annoying…
If you add also leaning, then it would be very nice if one also sees a wider field of view. (As in Swat)
- A Zoom option in crosshairs would be very great. In order to aim at targets in the distance more closely.
Of course, not as if you have a sniper rifle… 
But so that you get a little closer to the wide objectives… (As in Swat)
PS:
I noticed in a video that some grenades (whether Stinger, gas or flash) are not thrown by hand … The player holds the gun in his hand and throws (without changing) a grenade. 
Link: Flashbang - YouTube
If you change the weapon, you sometimes have a disadvantage. During the procedure an opponent can attack. Because it is a long time without reaction during the change. This should exploit some opponents.
Quote: “…or you can continue posting in this thread, whichever takes your fancy.”
Okay, I’ll do that. Thank you so much for this opportunity…
We’ll talk in the Swat 4 community. New suggestions and requests would then presents here…
Again many thanks to Darkly and Kromenoi for your answers!!!
Much success in the development of BLISTER. We wait all excited…