Hello. My name is Dmitriy. I am glad to present you my new map concept.
Codename: Mission "Covering"
Picture 1 - https://i.imgur.com/NH67YaE.jpg
Picture 2 - https://i.imgur.com/dHU1Vmy.jpg
Description:
The citadels A and B have a durability of 20,000 units.
After the start, every 2:00 minutes randomly for 1 minute activate the point C1 or C2. Each point at the time of the objective contains 1500 units of structure. After clicking on a point, the player, after 3 seconds of activation, begins to pick up 20 units of structure per second from a point. A maximum of one player at a time can be collected 260 units. Movement or attack interrupts the collection of the resource, and the next time the player must again activate a point of 3 seconds to begin collecting 20 units of structure per second.
Having collected the resource, the player must take it to the point D, and in 3 seconds unload the entire collected resource into the construction of the allied cannon. As soon as the dot D collects 1000 units of structure, the team receives a Big Cannon, which starts firing at an enemy citadel every 5 seconds, dealing 200 points of damage.
If the hero dies with the collected resource, then a container remains in its place for 10 seconds, which must also be activated for 3 seconds, but another player will collect at a speed of 25 units per second.
To destroy an enemy Сannon, players must destroy any 2 of its supports - E1, E2, E3 and E4. Each support ** E ** has a strength of 1200 units.
Thus, 2-3 cannons can be assembled in one match, which help to win the game.
The map also has 4 camps - two elite F1 and two simple F2.
In the center of the map is the Big Fountain, which does not collapse, and from which all players can draw health and mana, the volume of which is 125% of the volume of a regular fountain. The restoration time of all the fountains is common. But if a player takes advantage of the Big Fountain, then the recovery time of all the fountains will be 25% longer.
Thanks for watching! 
Also see my other concepts:
REWORK: Whitemane, Healer - https://us.forums.blizzard.com/en/heroes/t/hero-rework-whitemane/27331
Charki, Melee Assassin - https://us.forums.blizzard.com/en/heroes/t/new-hero-charki-melee-assassin/27132
Strand of the Ancients, Map - https://us.forums.blizzard.com/en/heroes/t/new-map-strand-of-the-ancients/26872
Daelin, Bruiser - https://us.forums.blizzard.com/en/heroes/t/new-hero-admiral-daelin-proudmoore-bruiser/26623
Antonidas, Support / Assassin - https://us.forums.blizzard.com/en/heroes/t/new-hero-archmage-antonidas-support-assassin/26454
Bolner, Support - https://us.forums.blizzard.com/en/heroes/t/new-hero-bolner-support/24229
Ionar, Tank - https://us.forums.blizzard.com/en/heroes/t/new-hero-ionar-tank/24117
Tony, Support - https://us.forums.blizzard.com/en/heroes/t/new-hero-tony-romano-support/24025
Dyozi, Ranged Assassin - https://us.forums.blizzard.com/en/heroes/t/new-hero-dyozi-ranged-assassin/23965
HYDRA, Tank\Assassin\Support, Hero for three players - https://us.forums.blizzard.com/en/heroes/t/new-hero-hydra-tank-assassin-support-mega-hero-for-three-players/23664
Zakunda, Support - https://us.forums.blizzard.com/en/heroes/t/new-hero-zakunda-support/23564
Akama, Bruiser - https://us.forums.blizzard.com/en/heroes/t/new-hero-akama-bruiser/23389
KURKEN, Bruiser \ Melee Assassin, Hero for two players - https://us.forums.blizzard.com/en/heroes/t/new-hero-kurken-tank-melee-assassin-new-hero-for-two-players/22709
Kavetdren, Support - https://us.forums.blizzard.com/en/heroes/t/new-hero-kavetdren-support/22640
Kodorb, Support - https://us.forums.blizzard.com/en/heroes/t/new-hero-kodorb-support/22540
Monkana, Bruiser - https://us.forums.blizzard.com/en/heroes/t/new-hero-monkana-bruiser/22461
Sunny Glade, New Map - https://us.forums.blizzard.com/en/heroes/t/new-map-sunny-glade/22254
Floating Island, New Map - https://us.forums.blizzard.com/en/heroes/t/new-map-floating-island/22204
Uku’lar, Healer - https://us.forums.blizzard.com/en/heroes/t/new-hero-ukular-healer/19724
The Motorshell, Transport - https://us.forums.blizzard.com/en/heroes/t/new-transport-the-motorshell/15704
Reiker, Support - https://us.forums.blizzard.com/en/heroes/t/new-hero-reiker-support/15176
Girth, Tank\Support - http://us.forums.blizzard.com/en/heroes/t/new-hero-girth-tank-support/14830
Teron, Specialist - http://us.forums.blizzard.com/en/heroes/t/new-hero-teron-specialist/14631
Quick Messages - http://us.forums.blizzard.com/en/heroes/t/suggestion-quick-messages/5150