I agree that Reno isn't really the best fit for a typical Rogue playstyle, but Rogue has some special synergy with Reno in that it's easy for Rogue to play it multiple times with Shadowstep, so they can get even more value out of the card than a typical class can.
That said, your deck has a couple of cards in it that don't seem to fit very well, even with a limited cardpool.
Silvermoon Guardian is just kind of a terrible card. If your opponent has a ping like Mage or Rogue hero power, it's basically a 4 mana 3/4 at best, and even in other cases it doesn't trade very well on board. The optimal scenario is where you play it into something like a 4/3 on your opponent's side and get a great trade there, but even then if your opponent plays something like a Chillwind Yeti on their turn 4, then they can eat your Silvermoon Guardian pretty much for free. I'd swap it out for something like a Yeti, or since you're Rogue, Tomb Pillager, which is a great card.
Southsea Deckhand is a good card in Rogue, but it really only shines a deck which is aggressive, has attack buffs like Cold Blood, or has a lot of Pirate synergy, and your deck has none of those. Similarly, Lance Carrier and Dire Wolf Alpha are best in a deck where you have lots of small minions which let you set up good trades on the board, which is not the strength of a Reno deck. I think I'd replace those with either drawing cards like Loot Hoarder or Shiv, which will let you search for your removal and Reno, or early game minions which stand better on their own, like Undercity Valiant, Huge Toad, Defias Ringleader, and Buccaneer.
As Legendaries go, Illidan Stormrage is... not the greatest. He's definitely fun to use, and if you like him in your deck then feel free to keep him - he was my first legendary and I used him all the time
. But honestly, something like Boulderfist Ogre, Shado-pan Rider, or Sunwalker will usually be more playable; 5 health is just so little. If you can afford the dust for a legendary and need something in the 6-drop slot, Sylvanas Windrunner is amazing and has been in very strong decks pretty much all the way since beta, so that's a worthwhile craft.