Using multiple plugins in GPTs

I’m curious about if Custom GPTS are going to be a backwards step for those of us who like to mix and match plugins.

Right now I use several plugins daily in the same context; one to read PDFs, one to search the web, one to analyse GitHub, and a couple of different ones to draw diagrams, also Wolfram Alpha sometimes (obviously there is a maximum of 3 per chat, I mix and match depending on the task).

None of these are particularly useful on their own, but combined they are pretty handy.

Am I correct in saying that GPTs will have no way of replicating this functionality of using a variety of plugins together in the same context? And I will be limited to whatever functionality a given GPT has?

You can use the mention functionality now XD.