Brown’s first season in charge at Langtree Park was marred by injuries, and he was forced in to fielding several makeshift half-back combinations, which often included international back-rower Jon Wilkin.
He said: “Luke Walsh was obviously a really important signing, for a number of reasons.
“He’s got a very good kicking game, he’s a good talker and organiser, and he will compliment the players around him well.
“He will be a good link for the other players at the club, and the different skill sets they all provide should work together well.
“I’m hoping Walshy can provide something that the club has lacked since Sean Long left.
“The disruption in the half-backs last year didn’t help, if you look at the other sides that did well, Huddersfield and Wigan, they had stability in their halves which is key.
“Unfortunately due to moving Jonny Lomax and the injuries we then suffered, we struggled.”
Walsh, 26, has joined from Penrith on a two-year deal, and fellow former Panthers player, prop Mose Masoe, also indicates where Brown feels Saints were lacking last season.
Brown added: “Mose is a big lad, and we feel that is something we’ve lacked a little bit in the squad.
“Mose is also a likeable character for fans from both sides. He’ll certainly provide some personality for the game.
“Last year I felt we lacked a bit of size in that area and Mose definitely improves us.
St Helens kick-off their season with a trip to Warrington on Thursday night, in front of the SKY Sports TV cameras.