Fully agree here - is there any option to check for "Merits earned in the last 120 days" other than ddmrddmr´s lovely tool?
The Merit summary in your profile is for exactly 120 days. It's quite easy to add them up, if it can help any campaign I'll be happy to create a weekly file in CSV or any other format for this.I like BPIP but its some extra-clicks so to me this would be a nice feature on Bitcointalk, maybe we can collect some funds and pay for that feature!? 
The forum doesn't need money, so paying won't get you features. But there's a BPIP.org Chrome & FireFox Extension already.