They OK damage, mes resistance, and damage mitigation from day one. When Sentinels get buffed I anticipate them to be much more popular than they are. They're a very easy AT to play, even easier than Blasters.
I think adding superdyne as a temporary power that has some negative consequences would be a cool RP addition to the game. Make it so it's not game breaking, maybe something like a +5% in dmg/res when in use but once it crashes you have a corresponding debuff or maybe a debuff while in use of -2.5% def/acc.
Super strength is the vanilla of primaries, everyone wants to play it at least once, only then to realize it's boring. But it still needs to be ported to Scrappers.
Being there is a million page thread about Rage changes on the test server "Pineapple" it looks like the devs are maybe possibly getting ready to port Super Strength to other ATs ala Scrappers?
This isn't a good idea for the exact reason you posted. I'd much rather get occasional hints and then have an Issue dropped on us and we all scream like school children in excitement.