http://www.aminoapps.com/page/pokemon/2860060/living-with-a-double-weakness-grass

Talking about Silli inferior changes in appearance you know who else got one while he seemed to be really cute at it's first stage ? This guy.

I wouldn't say so, many people think that getting a second STAB is worth gaining a couple more weakneses but it really depeds, Pyroar and Heliolisk don't gain anything from getting the normal STAB, and beeing the fighting type more common than the ghost one the gained immunity doesn't fill the void made by the added weakness...

Rowlet will most likely stay as a flying type there has only been 1 other starter that from the start had a dual typing and that was Bulbasaur and he stays dual typing in it's final evo., also don't take the lines on Litten head as a sulfur sign and that it's final evo. will be poison because of it since the lines on his head might just be the lines that tiger would've since the Fire type starters all represent the Chinese calendar and the only animals missing are tiger,goat,horse,rabbit,snake and ox and since Litten looks like a kitten a tiger has his final evo. seems very likely, so this "leak" might be true but don't be too sure of anything until it's confirmed

Serperior's monotyping actually makes it a decent tank, because it's not taking on a ton more weaknesses like other grass types. Look at this list:

http://bulbapedia.bulbagarden.net/wiki/Grass_%28type%29

Almost all of the dual-Grass types that aren't half Poison have at least one 2x weakness. Meanwhile, what's the dual typing doing for them on offense? Diddly squat.

Parasect is Bug-Grass: two double weaknesses, six in total, and Bug-Grass gives horrible coverage (can't do a thing to Flying, Poison or Steel)

Chesnaught and Breloom: double weak to Flying, both STABs can't do a thing to Flying, Poison or Bug. More horrible coverage.

Venusaur and other Grass/Poison: They tend to depend highly on status moves, but Can't do crap to Steel and Poison if they're not carrying Sleep Powder/Stun Spore, can't use status on other Grass types except Toxic, and get completley walled by other Grass/Poison.

Even the best dual-type out there not named Mega Venusaur, Ferrothorn, has a double weakness to Fire. Most people who play competitively don't bother to give it both STABs either.

Well said. Charizard didn't gain any huge advantages by gaining wings. It's second STAB is still resisted by Rock, overlaps with Grass and Bug, and guess what? Stealth Rock.

That theory is garbage and has been debunked since Gen 2. Cyndaquil is not a freaking rat.

Well foxes are related to dogs so it technically counts

Grass types are better off being monotypes. The only dual type grass pokemon used in competitive gaming are gimmick pokemon that can tank or attack specific common enemies like Ferrothorn, Breloom or Amoonguss. And Megavenusaur because of his decents stats and only 2 weaknesses...And that's it, add Serperior and that's all the grass types used in the most common of tiers.

As of now Rowlet is going to be garbage simply because of his too many weaknesses to very common types of attacks. I really hope he loses his flying side of things. If you truly love him, don't let him fly. It's for his own good. *sad music*

That'd actually be great.  The x4 weakness against Ice is what really makes him an easy target IMO. 

He'd still be weak to Stealth Rock but theres ways around that I suppose.