You must be too young for old Simpsons.
I'm old enough that I don't even regard Poochie as "old" Simpsons. Hell, it's been so long since I've even watched the show that Poochie is like a more recent episode in my mind even though it came out when I was in high school.
F*ck. Poochie IS old. He's older than Klonoa though by only a couple of months.
I'm very much of the idea that if the IP needs to be retooled in order for the company to be confident in it, then why use that IP? Why not just make some new character? The whole idea of sequels and spin-offs and franchises is that the IP's name recognition helps sell the product. The whole reason to even make any Klonoa product is because Klonoa should be a strong enough brand to make a profit. If it's not then from a business perspective why bother? If they have to Poochify Klonoa then the Klonoa name is worthless. Anyone who knows Klonoa will not appreciate the make-over while anyone who would like the make-over will have never heard of Klonoa in the first place.
The only justification is a lack of creativity. If they make a new character they have to make a new game and recycling this one is obviously easier and cheaper. Maybe I've just become too cynical but it seems like a bunch of suits met in a boardroom to discuss new kid-oriented product for the Wii and decided that remaking an old game would cut costs and they could just retool the character design to something they figure would appeal more to today's kids, who wouldn't realize they're playing a ten year old game anyway.
Hell, I just don't trust any reused content on the Wii. I just think they're trying to scam the Wii userbase because evidence shows that they can.