It would be nice if the teleporter acted like a requester chest where I can request a certain number of things into it as by putting a system to use inserters to put items in gets complicated

Then we could also use things like trash unrequested which will empty out the things we don't want to send without using inserters.

Oh, this is my constant problem...

When a certain amount of items is requested on the other side, more is always placed in the teleporter, especially if you set the signal to start when the teleporter is full, the loaders do not fill the full stack of items to the end (in the last cell).
Of course, you can build a whole system of combinators, but it looks just awful :(
+1 for such changes :)

One of the big issues with using blacklisting inserters and combinators is that blacklisting only has 5 items so if you request more than that it screws up the whole thing.

One of the big issues with using blacklisting inserters and combinators is that blacklisting only has 5 items so if you request more than that it screws up the whole thing.

Well, yes, but if you put 2 inserters, then there are already 10 elements, the same applies to combinators.
But if you surround the teleport with a system of inserters, loaders and combinators, then you yourself will get confused about what, who, and how it is done, and even more so how to set it all up :)