If this were to happen, it'll be a costly investment. Train modifications, launch track modification and/or replacement, likely brake run changes, control system swap, etc. Maintenance wise, it would be better as less moving parts the better. If it ever were to switch to LSM you are removing a lot of parts that are a constant source of the downtime. Around 312 individual hydraulic pistons and brake fins (that all need monitored), the launch dog and cable system, and the actual hydraulic motors for the launch itself. That's the beauty of LSMs is that they are stationary and serve as brakes when not powered to launch.
That being said, LSMs are also not foolproof and have their own issues, especially if you were to take the risk to "push it to the limits" and create the fastest launched LSM coaster in the world. Would it be less maintenance? Quite possibly. Could it open up a whole new can of worms in terms of problems arising? Absolutely. Let alone the power draw that is required for each launch, which would be astronomical compared to the hydraulic motors. There are a multitude of factors that would need to be cost analyzed for this.
At the end of the day, can LSMs reliability even push 120mph+ in TTDs current space? Red Force gets to ~112mph in 100ft less of launch track, but how much further can you push it? So many questions.
Curious to see what will be done with it though. There are a hell of a lot of utility and survey markings around. Could be anything though. Even replacement of pavement / concrete would require an 811 survey to mark out everything. Wouldn't read too much into any markings, wait for work to actually start.