If I've made any RegEx errors, feel free to correct them; also feel free to add any submissions you think it'd be worth catching, though preferably only cases as unambiguously suggestion-free as the ones below.

There are certain feedback submissions that should always be resolved. Some of them are unique to specific articles, but others can be resolved in any article, simply because they, as a rule, can never be suggestions for improvement. As follows is a list of Article Feedback Tool comments that a bot could be programmed to resolve on sight. Clearly this is not a complete list, but we would start by hiding these, and add more and more to auto-resolve as time goes by. Once you tackle the big ones, it's a lot easier to find the little ones.

Generic "good article"/"I love Wikipedia" feedback:

t+hank+s*( you)*[.!,?]*

n+othing+( to+ change+)*[.!,?]*

(n*o*)+( t+hank+s*( you)|(suggestions))*[.!,?]*

((i+t+'*s+ )|(i* (l+ike+|l+ove+) ))*((y+our+ )|(t+his+ ))(a+ rticle+ )*(i+s+ )*((v+ery+)|(s+o+))( *(f+i+n+e+|g+o{2,}d+|g+r+e+a+t+|p+e+r+f+e+c+t+|w+el{2,}[- ]*writ{2,}en+) *)+(article+)*(job+)*((web)*site+)(Wikipedia)*[.!,?]*

Resolve with summary "No suggestion for improvement - glad you like the article, though!"

Generic test feedback:

h+e+l{2,}o+[.!,?]*

t+e+s+t+[.!,?]*

h+i+[.!,?]*

d+oes+ this+ work+[.!,?]*

Resolve with summary "Test feedback."

Misplaced moodbar feedback:

happy[.!,?]*

sad[.!,?]*

confused[.!,?]*

Resolve with summary "Misplaced moodbar feedback."

It's also worth discussing if it would be a good idea to program the bot to auto-resolve all feedback such as "needs more information," since comments like these can pretty much never be used for specific improvement.