>>28504112>What do you look for in a pokemons evolution?It depends entirely on the Pokemon. Some Pokemon start off with a design that's just so good on its own that I'd prefer if its evolution didn't stray too far from that excellent starting point. In other words, "it just gets bigger" can be a good thing if the Pokemon that's getting bigger was good to begin with.
Others may feel conceptually "unfinished" and begging to have said concept expanded on or explored in a more interesting or unexpected way. Unfortunately many Pokemon that don't evolve at all fall into this category for me. Pokemon like Qwilfish or Stantler that have very basic concepts, a lot of potential for growth, but ultimately get nothing at all.
And every once in awhile having a Remoraid => Octillery type evolution can be fun to keep things entertaining.
I think that Rockruff handled this perfectly, in that it has a pseudo-split evolution that attempts to appease both the people who just want a bigger, more adult Rockruff and those who wanted the more "out there" concept of a werewolf.