So with the new revamp to the suggestions subforum, 3 new reactions were added, exclusively to this subforum. These reactions don't affect your reaction score in any way, a change I'm both for, and against.
I think good suggestions should be rewarded, but I also agree with the change. My suggestion is to add a separate profile statistic (similar to messages, reaction score, and trophies), this statistic will represent the number of positive reactions your suggestions receive and will be shown in a user's profile, similar to other statistics. The only difference would be that this statistic, unlike the others, will only be shown only in your profile page, not in the small pop up when you hover over someone's profile, that way it doesn't become too messy.