I'm certainly not advocating for the wholesale replacement of Wheeled LAVs. I would advocate for replacing 200 (or so) wheeled with tracked.
I think that's two fundamentally different discussions with very different timelines. 200 tracked IFV's to run a mixed fleet with the LAV's would fit in with short term capability filling and need to get in line with the current laundry list of priorities. If were to have a high enough backing to jump the queue it would also likely have enough urgency to see us want to fill as quickly as possible and go off the shelf, in which case a lease/purchase combo of in stock Brads would make more sense.
Domestic Griffin III/ Tracked LAV / whatever production is a long term play requiring some foresight and vision for the Army to be, and based on timelines only represents a slightly ahead of schedule full fleet recapitalization. We've shown a strong leaning towards being willing field a single weight, single chassis force, and were one election away from that fleet being tracked (TH-495). Given the current geopolitical climate there could/should be arguments made for the next version of that being weighted more towards peer warfighting than PSO.
Timeline
Lets say this vision for a Griffin army had weight behind it, with the political backing to make sure it got to GDLS-C. ACSV project runs to 2024/25. 21 months to conceptualize, define requirements, gain that political backing, get go ahead, develop variants. Extremely optimistic.
Start production in 2025, start with the hottest fire (RCAC- clapped out Leo's, undergunned LAV's, TAPV's) plus necessesary support vehicles, ~180 CAV Recce + 20 Recovery/Engineering etc. 200 vehicles easily into 2027. Again probably optimistic.
2027 you're starting production of your ~500 ISC's, OPV's, Mortar carriers, AT etc. for the RCIC battalions by the time you're done that you're in the 2030's, pulling the 6.0's off the line with no more than a handful of years left in the lifespan (refurbish for sale, reserves?)
If we go down the road to domestic tracked IFV production the wholesale replacement of the 6.0 fleet will be required.