If you run client work, you are the last pair of eyes on everything. Every report, every update, every deck. That is what caps how many clients you can carry. It gets worse as you grow.
Mycel runs the work your service business sells - clients, deliverables, approvals, invoices. Each job runs in a disposable sandbox that never holds a credential, and nothing reaches a client until you approve it. From $299/mo, or self-host free.