I can give one comment.
The MAPLE reactors are only isotope production, so they address only part of the mission that is currently undertaken by NRU. If you want to maintain a presence in the nuclear power industry, if you want to be able to do engineering research, if you want to do fundamental research, you cannot do any of these at a MAPLE facility. The only way to replace NRU properly is with a full-scale research reactor that's multi-purpose in design.