Why not do it all in a single bill? They could still make him a figure head, even name the bill after him and include a specific point about pardoning him, but include everyone else too.

If this ends up getting through all the stages and they then want to do the same for everyone else, at the very least it's a waste of time going through the stages again (if there's no more debate), or if there is still debate then even more time wasted.

The only reason not to include it in this bill, if that is their long-term plan, is if they think it is more likely to pass with just one name, which seems odd to me.