Can we get some upgrades to the Merge Submodels

I am wanting to be able to see the split merge projects before or after they are merged.

I am wondering if the split projects can be spawned into sub-projects of the main project and
if the sub-projects can be merged after... also to be able to see the reports of the sub-models

I am thinking of how to troubleshoot when projects cannot process all the way thru.

Also just the basic merge of sub-projects can help when processing large areas/data sets.

Also wondering about making a larger tile system, where a bunch of photos can be sorted into tiles, based on
an input matrix size. This is similar to how large orthophotography is processed.