It makes me chuckle that people bitch about "prot" palas but its not the pala its the BoP (as others have said) that allows certain mechanics to be cheesed.
Also, battlehealer is pretty insignificant. If you want to look at big raidheals from a prot pala its holy prism / lights hammer that they come from. Other people have dealt with the self heals. They aren't out of proportion when it comes to mitigation. DK's bloodshields do more etcetc.
Put it this way, one class has to be best at a point in time, at the moment its paladins. I'm not sure I agree with the statement that they've been top of the pile for ages. In DS it was get a DK or gtfo. I'm sure theres other similar examples.
Finally, why not ask for other classes to be boosted to be more fun and engaging? Prot palas are fun to play, I've mained one since FL and I'm enjoying it now more than ever. Tanking is a role thats hard to fill, I don't find it a bad thing they've made it somewhat fun.