I agree... any other suggestions?
... regarding?
The original question "....thoughts?"....
Oh. Hashrate is not a good indicator of the popularity of a pool. Proportion of the network is a better indicator:

Slush's pool is the black line in the second group. It's been in decline for a long time, I don't see an improvement unless Slush makes some changes.
Thanks for this important insight into the situation. It's likely that that the proportion of the network is an outcome rather than a cause. My gut feeling is that some areas of potential improvement are:
Improve pool reliability - fix the various 'glitches' in reporting of rewards (probably teething problems related to recent 'upgrades')
Provide some presence on the forum, in addition to the 'ticket' system
Consider modifying the 'exponential anti-hopping' algorithm which is misunderstood and creates negative sentiments (or spend some time/effort to explain why it is so good)
Some clear advantages of Slush are:
Long term track record
Honesty
Low pool fee
Reliability of the core mining aspect
Cheers