If you don’t need more than 4 channels (possibly stereo), then my soon to be released Venom Mix Expanders includes Aux/Send expanders that can be chained, with no limit to the number of Aux Sends.
There are many types of Venom Mix expanders. The goal is to be able to create a compact 4 channel mixer with just the features that you need. If you want all the features that are available, then you probably would be better off with a single monolithic mixer - with MixMaster being the obvious choice. But at least for me, more often than not I don’t need all the features, and I hate consuming so much space in my patch.