To be fair, I just want a burmy because I have a massive soft spot for the line and I think a mothim would be pretty good down the line.Joltik sure, but I'm not sold on burmy. It doesn't seem to have much of any possible thematic links to Mareep. Joltik has lots though, which surprised me a bit since it was more than I initially suspected. So if a joltik ever becomes an option to join our team, I'd be all for it.
Apart from burmy there is swaddle or wurmple, mainly because I like bugs.