It sounds small, but all three have big implications for actual gameplay. More potent heals make the healing process less focused on spamming one ability and more focused upon landing something with impact, while faster tank cooldowns make it easier to pull things and move faster without fear of losing control. The weapon buffs also synergize better with other ability and help ensure that weapon-based playstyles will still work. These changes are on the test server now, so you can see how they shake out for yourself if you’re so inclined.
DC Universe Online is an ongoing process with a lot of moving parts, and that means that none of those parts are finished moving until all is said and done. The most recent adjustment to the revamp is only about three changes, but those three changes ripple outward to have a big impact. Tank pulls have their cooldowns lowered, some heals have increased potency, and weapon buffs have increased duration. That’s it.
Source: Official Site