The main problem I had personally with previous raids is that the defenders would always eventually "win" the raid. For example, sith go to raid Jedi, and let's just say they are demolishing Jedi, after about 5-10mins of this all of the Sith are relatively low on HP, while the Jedi who had died are respawned with full HP, this cycle continues until every sith is either dead or had left. The sith "Won" but the Jedi technically won too, fending off the Sith.
With this new raiding rule, both factions have one life and it allows for a clearly defined winner, which gives the winning faction a sense of accomplishment instead of it being just an inevitable defeat, so I can side with that 1 life rule, pretty a-ok.
As for VIP healing, this was also an issue, it entices runners, which by extent are a dueler's worst annoyance. Clearly, this was put into effect so that raids don't last 20-30mins (even with a 15min time cap beforehand) with people just force leaping away and then VIP healing, especially for high-level players that can tank a ton of damage.
The ratio thing is the only part I have a problem with this change, I know it was a topic of controversy beforehand but now it's very minute and annoying to keep track of, like it takes 5-10mins of preparation just to make sure everything is ok before the raid and at that point the opposing faction is already subconsciously preparing themselves for the raid. If it was something that could take a minute, (i.e 60/40 ratio) that could be looked through the tab menu within a solid minute or two without giving the opposing faction any indicator, then that would be perfect and would make this entire change a slam.
Overall I give the change a fair +1, with room for improvement.