Cat Dance, what are you talking about? They have the worst reinforcement time of any faction! No one takes as long to fully reinforce their basic infantry squads to full as the Cron do, even with obelisks. With a full complement of obelisks (or in combination with a CP or two), the best they can manage is 16.5 seconds. That's double or worse just about every other faction's reinforcement time.
Look, people, nobody wants to see the Necron given the ability to go on their lolparades again. But then again, that was only ever a problem in early tiers and, especially, on smaller maps where requisition resources were scarce for other factions in opposition to the Necronomy. Even with the proposed changes, by the time T4 rolls around, people should have enough forces and tech on hand to put the brakes on the 'Crons NW Walk of Doom and stop the lolparade before it gets to their base... and, if they played it out well, still be in a good position to send reprisals when the dust settles.
Asking for a moderate buff to their T4 through researches that only become available at that time, at a further cost, is not going to improve their ability to gain these early game "easy wins" that people are so afraid of.