I think this holds true to almost any CRM, but if you want to truly utilize it you sort of need to go all in. This can become tough with WMJ because it doesn't offer some critical options that many other CRMs do, like the ability to create and send emails, e-newsletters, to throttle and invite outside clients to look at projects, etc. As such we're pairing Workamajig with Hubspot (and slowly phasing out Mailchimp) and trying to keep the data clean and flowing between them all is pretty tough. I'm also not aware of any API bridge from Wordpress to Workamajig so while I can program and feed my leads from my site into the other spaces, Workamajig remains a manual entry for any insertions you want, even if simply as a CSV import.
But - if you're not worried about that and simply want to manage projects, budget time, and scope things, it's a robust system allowing you to do so.
Auto-schedule population - The most inconvenient thing about using JIG was that the dates wouldn't auto-populate. Example: I move the review date but the rest of the dates stay the same. Depending on each project level, if one date is adjusted the rest should update as well. That way we aren't spending a lot of time moving dates around manually.
Notifications - JIG should have desktop notifications so we can see when tasks are on us even when we aren't in JIG.
We've used QuickBooks and it didn't align well with our business, so there were a lot of insights I wanted from the numbers, but couldn't get. We use Basecamp, which is easy, but can get disorganized pretty quickly and takes discipline to stay structured.
The subscription expense and IT overhead has been substantial. That being said at the time of implementation, most other competing platforms were in line with their pricing.
As more competitive alternatives have come to market we would have probably gone with an entirely cloud base alternative at a lower price.
We ended up with ClickUp as our primary project management platform. If our finance/accounting software wasn't already so integrated with Workamjig we would probably switch to it entirely.