The scourge was an inside job from various powerful players working together to bring about the second coming of the legion, ner’zhul with his mind power seducing ppl from across 2 continents, the dreadlords working to secure that the plan worked, and the cult that at its head had a mage powerful enough to challenge antonidas, do you truly believed that Gilneas alone could deal with them all together? Even if Gilneas was a powerhouse so powerful that it could match the horde and alliance combined, the scourge had one advantage, secrecy, no one knew the scourge even existed, they had all the time in the world to pull up a plan and cripple Gilneas to either destroy it or turn them into the undead before lordaeron.
But that was never the case, even so that the the leadership of the scourge simply ignores gilneas altogether, so their forces even if combined with lordaeron’s would not matter much in the end.
Here you are being disingenuous, you know we are talking about two completely different times(with gilneas living two realities), the first is the start of the war and the second is several months after the battle of mount hyjal.
Let us start them…
Like I said in the previous post at the start of the war the whole advantage of the scourge was not strength or number of their army but secrecy and information on the target.
The scourge planned the invasion years before it even began, arthas being chosen was the “chosen one” when he was born, so about 2 decades to prepare with a hell lot of helpers from demons to rogue mages and greedy nobles, gilneas would not help as much as you think since they would be in the dark like lordaeron was and we know that at the time lordaeron’s army was better than the scourge but they did not knew what they were up against and fed their cities with plagued grain, the same would have happen to gilneas if they got into the war.
As for the time of the rule of the triumvirate drealords( balnazzar, detheroc and Varimathras) we know that the scourge was not at its peak, not ib lordaeron at least.
Why?
1st the bulk of the scourge was sent to Kalimdor to aid in the conquest of the continet by Archimonde and this army was obliterated leaving only pockets of undead lost in the wilderness never to return to EA.
2nd the dreadlord trio never cared to keep up the work arthas was doing when ahead of the scourge, they actually did not cared for the undead, they were bored and waited for MONTHS for a signal from lord archimonde, giving space and time for the human resistance to clear up holdouts and gather reinforcements from both the dwarves and quel’thalas and mass recruiting those still alive and capable of fighting, while those who could not were leaving through the mountains
3rd at this time gilneas was already dealing with the curse of the worgen, they were in no better situation than those outside of the wall, so they would not be able to help it would take years, so long that in fact the lich king was already killed by the time they got they things together and became a “nation” again.
And about slowing the lich king, perhaps they could have slowed but if the paladins with the light at their side and a weapon that cleaved so many undead to ash did not slowed the advance of the scourge what would gilneas do?