Olimar has the potential to be the best character in brawl. Perfecting his camping would do it, but everyone would hate you like they now hate MK. Camping would (should) reduce the amount of damage received my Olimar solving his tether recovery problem (never having to use it). In addition, to dodge the pikmin, your opponents would have to jump or spot dodge. If your opponents jump, usmash the crap out of them. If they jump higher, upb them (practice). If they decide to spot dodge, just take the opportunity to regain your space, or punish. A perfect camping Olimar would rack up damage like crazy and punish when needed.