Concerning Champion Buffs, and Whether or not they should be dispellable.
I just wanted to point out that if monster champion buffs were dispellable, it would be a very good idea for the devs to change how dispelling effects work.
Dispelling is one of those mechanics that are very hard for players to tell if they are going to work or not. Does the CR of a given spellcasting mob equal its' caster level? I have no idea. If it were, then I would say that dispelling is horribly useless in epic level content. If not... then it's still impractical. If I don't know how useful a spell is going to be, I as a spellcaster am not going to bother with it.
Furthermore, unlike other offensive spells they work by *caster level* checks, not DCs. So, it's not like you an actually build to be a good dispeller, even if such a role were generally useful.
Suggestion: Remove the CL check and increase the cooldowns of Dispelling spells. If you want, make it so that, depending on how powerful the spell is, it removes more effects from the target. "Lesser Dispel" would remove a single magical effect, while "Mordenkeinen's Disjunction" would remove 2d4 effects, for example.
Just seems like more grind
Hate them, especially in heroics. My opinion. Calling me a whiner (or me calling you a whiner) is a pointless ad hominem attack and says more about the one who needs to resort to it than the one they are attacking.
People don't want to give up their heroic elite streaks if champions prevent it. The tyranny of time zones makes grouping extremely difficult for some and claiming that most players should not be able to solo elite totally ignores the way the game has changed. Taking something away after allowing it for so long will always create resentment, telling people its more fun when many are clearly communicating it is not is unhelpful and patronizing. An analogy would be to remove ALL self healing as people were never intended to run quests without at least a hire and on higher difficulties a dedicated healer. Hey! It will be more fun! (yes I know that's a bit extreme, just trying to be illustrative). Things have changed.
But my main objection is that challenge without reward simply becomes increased grind. Quests take much longer at any level and chests full of vendor trash are not a reward. After slogging solo through Inferno and Temple of Vol what had seemed like a good idea had quickly shown itself to be poorly implemented and absolutely not fun in any way. (Off topic) The terrible changes to hirelings that Turbine seem to have their fingers in their ears about only increase the pain. (Back on topic) Meaningful experience rewards are most likely the only thing that would make them bearable for me. Not junk loot, not renown, not some pointless tally of how many I killed. Make them selectable (so those who like them can leave them on) and make them give XP (hey in a party I'd leave them on for some *meaningful* XP).
(Off topic again) Oh and change hires back to the way they were please!