Hot Take: Extended is actually perfect as is
Extended is a very capable hand, with even some basic skills (like backpedaling to maintain distance), it can counter a lot of gloves, including- sorry, ESPECIALLY overkill and god gloves (which are pretty broken weapons.)
The cherry on top with this glove is that its requirements are so low that almost anyone can use it, which encourages victory through skill rather than playtime/grinding.
Despite these powers, it still has some good counters, basically any glove who can sneak up on an extended user or get close enough so that the extended can’t hit them earns the victory.